A Study to Evaluate the Safety, Efficacy, Pharmacokinetics and Pharmacodynamics of Emicizumab in Participants With Mild or Moderate Hemophilia A Without FVIII Inhibitors

The number of all bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. In this outcome measure, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. As "all bleeds" comprises both treated and non-treated bleeds, the 72-hour rule was implemented separately for treated and non-treated bleeds. For treated bleeds, the 72-hour rule meant that two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. For non-treated bleeds, the 72-hour rule was implemented by calculating a treatment-free period of 72 hours from the bleed itself.

The number of all bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. In this outcome measure, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. As "all bleeds" comprises both treated and non-treated bleeds, the 72-hour rule was implemented separately for treated and non-treated bleeds. For treated bleeds, the 72-hour rule meant that two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. For non-treated bleeds, the 72-hour rule was implemented by calculating a treatment-free period of 72 hours from the bleed itself.

The number of all bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. In this outcome measure, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. As "all bleeds" comprises both treated and non-treated bleeds, the 72-hour rule was implemented separately for treated and non-treated bleeds. For treated bleeds, the 72-hour rule meant that two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. For non-treated bleeds, the 72-hour rule was implemented by calculating a treatment-free period of 72 hours from the bleed itself.

The number of treated joint bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. A treated joint bleed was defined as a bleed with type reported as "joint" based on at least one of the following symptoms: increasing swelling or warmth of the skin over the joint and/or increasing pain, decreased range of motion, or difficulty using the joint compared with baseline, and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated joint bleed was defined as a bleed with type reported as "joint" based on at least one of the following symptoms: increasing swelling or warmth of the skin over the joint and/or increasing pain, decreased range of motion, or difficulty using the joint compared with baseline, and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated joint bleed was defined as a bleed with type reported as "joint" based on at least one of the following symptoms: increasing swelling or warmth of the skin over the joint and/or increasing pain, decreased range of motion, or difficulty using the joint compared with baseline, and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated target joint bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. A treated target joint bleed was defined as a joint bleed in a target joint, which is a joint location where at least 3 bleeds have occurred over the last 24 weeks prior to study entry or an unresolved target joint (target joint that does not fulfil ≤2 bleeds into this joint within a consecutive 12-month period), and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated target joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated target joint bleed was defined as a joint bleed in a target joint, which is a joint location where at least 3 bleeds have occurred over the last 24 weeks prior to study entry or an unresolved target joint (target joint that does not fulfil ≤2 bleeds into this joint within a consecutive 12-month period), and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated target joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated target joint bleed was defined as a joint bleed in a target joint, which is a joint location where at least 3 bleeds have occurred over the last 24 weeks prior to study entry or an unresolved target joint (target joint that does not fulfil ≤2 bleeds into this joint within a consecutive 12-month period), and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated spontaneous bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. A treated spontaneous bleed was defined as a treated bleed (bleed directly followed by a hemophilia medication reported to be a "treatment for bleed") with no other known contributing factor such as trauma or procedure/surgery. The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated spontaneous bleeds over the efficacy period is presented here as a calculated annualized bleed rate (ABR) that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated spontaneous bleed was defined as a treated bleed (bleed directly followed by a hemophilia medication reported to be a "treatment for bleed") with no other known contributing factor such as trauma or procedure/surgery. The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated spontaneous bleeds over the efficacy period is presented here as a calculated annualized bleed rate (ABR) that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated spontaneous bleed was defined as a treated bleed (bleed directly followed by a hemophilia medication reported to be a "treatment for bleed") with no other known contributing factor such as trauma or procedure/surgery. The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. A treated bleed was defined as a bleed that was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated bleed was defined as a bleed that was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated bleed was defined as a bleed that was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of all bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. In this outcome measure, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. As "all bleeds" comprises both treated and non-treated bleeds, the 72-hour rule was implemented separately for treated and non-treated bleeds. For treated bleeds, the 72-hour rule meant that two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. For non-treated bleeds, the 72-hour rule was implemented by calculating a treatment-free period of 72 hours from the bleed itself.

The number of all bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. In this outcome measure, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. As "all bleeds" comprises both treated and non-treated bleeds, the 72-hour rule was implemented separately for treated and non-treated bleeds. For treated bleeds, the 72-hour rule meant that two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. For non-treated bleeds, the 72-hour rule was implemented by calculating a treatment-free period of 72 hours from the bleed itself.

The number of all bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. In this outcome measure, all bleeds are included, irrespective of treatment with coagulation factors, with the following exception: bleeds due to surgery/procedure are excluded. As "all bleeds" comprises both treated and non-treated bleeds, the 72-hour rule was implemented separately for treated and non-treated bleeds. For treated bleeds, the 72-hour rule meant that two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. For non-treated bleeds, the 72-hour rule was implemented by calculating a treatment-free period of 72 hours from the bleed itself.

The number of treated joint bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. A treated joint bleed was defined as a bleed with type reported as "joint" based on at least one of the following symptoms: increasing swelling or warmth of the skin over the joint and/or increasing pain, decreased range of motion, or difficulty using the joint compared with baseline, and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated joint bleed was defined as a bleed with type reported as "joint" based on at least one of the following symptoms: increasing swelling or warmth of the skin over the joint and/or increasing pain, decreased range of motion, or difficulty using the joint compared with baseline, and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated joint bleed was defined as a bleed with type reported as "joint" based on at least one of the following symptoms: increasing swelling or warmth of the skin over the joint and/or increasing pain, decreased range of motion, or difficulty using the joint compared with baseline, and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated target joint bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. A treated target joint bleed was defined as a joint bleed in a target joint, which is a joint location where at least 3 bleeds have occurred over the last 24 weeks prior to study entry or an unresolved target joint (target joint that does not fulfil ≤2 bleeds into this joint within a consecutive 12-month period), and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated target joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated target joint bleed was defined as a joint bleed in a target joint, which is a joint location where at least 3 bleeds have occurred over the last 24 weeks prior to study entry or an unresolved target joint (target joint that does not fulfil ≤2 bleeds into this joint within a consecutive 12-month period), and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated target joint bleeds over the efficacy period is presented here as a calculated ABR that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated target joint bleed was defined as a joint bleed in a target joint, which is a joint location where at least 3 bleeds have occurred over the last 24 weeks prior to study entry or an unresolved target joint (target joint that does not fulfil ≤2 bleeds into this joint within a consecutive 12-month period), and the bleed was directly followed by a hemophilia medication reported to be a "treatment for bleed". The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated spontaneous bleeds over the efficacy period was estimated as an ABR using a negative binomial regression model, which accounts for different follow-up times. A treated spontaneous bleed was defined as a treated bleed (bleed directly followed by a hemophilia medication reported to be a "treatment for bleed") with no other known contributing factor such as trauma or procedure/surgery. The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated spontaneous bleeds over the efficacy period is presented here as a calculated annualized bleed rate (ABR) that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated spontaneous bleed was defined as a treated bleed (bleed directly followed by a hemophilia medication reported to be a "treatment for bleed") with no other known contributing factor such as trauma or procedure/surgery. The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

The number of treated spontaneous bleeds over the efficacy period is presented here as a calculated annualized bleed rate (ABR) that was annualized for each participant using the following formula: ABR = (number of bleeds/number of days during the efficacy period) x 365.25. A treated spontaneous bleed was defined as a treated bleed (bleed directly followed by a hemophilia medication reported to be a "treatment for bleed") with no other known contributing factor such as trauma or procedure/surgery. The 72-hour rule was implemented: two bleeds of the same type and at the same anatomical location were counted as one bleed if the second bleed occurred within 72 hours from the last treatment for the first bleed. Bleeds due to surgery/procedure were excluded.

Comprehensive Assessment Tool of Challenges in Hemophilia (CATCH) was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥ 18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, the daily activity RP and impact domain has 48 items with each item scored on 4 or 5 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept and applying a linear transformation. The transformed scores range from 0-100 scale for both the RP and Impact. Higher scores indicating higher perceived risk of having a bleed while doing daily activities and higher impact of hemophilia on daily activities.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥ 18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, the social activity RP and impact domain has 22 items with each item scored on 4 or 5 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept and applying a linear transformation. The transformed scores range from 0-100 scale for both the RP and Impact. Higher scores indicating higher perceived risk of having a bleed while doing social activities and higher impact of hemophilia on social activities.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥ 18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, the recreational activity RP and impact domain has 32 items and a larger bank of additional items with each item scored on 4 or 5 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept and applying a linear transformation. The transformed scores range from 0-100 scale for both the RP and Impact. Higher scores indicating higher perceived risk of having a bleed while doing recreational activities and higher impact of hemophilia on recreational activities.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥ 18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, work and college impact has 10 items and the items were scored on 4 or 5 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated impact of hemophilia on work and college activities.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, preoccupation has 10 items which were scored on 4 or 5 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated greater preoccupation related to hemophilia.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, treatment burden has 8 items which were scored on 4 or 5 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated greater perceived burden of the hemophilia treatment.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, the pain domain consisting of five items, assessed using an 11-point numeric rating scale where 0 = no pain and 10 = pain as bad as you can imagine. The data reported here are from participants who answered the following question: "Did you get a bleed in the past 7 days?" If the response was yes, participants were asked to rate their pain by selecting the number that best described the pain associated with the bleed. Data is reported only for categories/timepoints with non-zero values.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, the pain domain consists of five items, assessed using an 11-point numeric rating scale where 0 = no pain and 10 = pain as bad as you can imagine. The data reported here are from participants who answered the following question "Do you have target joints?" (If yes, please rate your pain by picking the number that best describes your pain in your target joint(s) over the past 7 days). Data is reported only for categories/timepoints with non-zero values.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, pain domain consists of five items, assessed using an 11-point numeric rating scale where 0 = no pain and 10 = pain as bad as you can imagine. The data reported here are from participants who answered the following question "Please rate your pain by picking the number that best describes your pain at its WORST over the past 7 days". Data is reported only for categories/timepoints with non-zero values.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, pain domain consists of five items, assessed using an 11-point numeric rating scale where 0 = no pain and 10 = pain as bad as you can imagine. The data reported here are from participants who answered the following question "Please rate your pain by picking the number that best describes your pain at its LEAST over the past 7 days." Data is reported only for categories/timepoints with non-zero values.

CATCH was used to measure the effect of hemophilia and its treatment on adult participants (aged ≥18 years). The adult version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, work impact, preoccupation, treatment burden, and pain. Of this, the pain domain consists of five items, assessed using an 11-point numeric rating scale where 0 = no pain and 10 = pain as bad as you can imagine. The data reported here are from participants who answered the following question "Please rate your pain by picking the number that best describes your pain at its average over the past 7 days". Data is reported only for categories/timepoints with non-zero values.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain). Of this, daily activity RP and impact has 38 items with each item scored on 3 or 4 points ordinal scale. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept and applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicating higher perceived risk of having a bleed while doing daily activities and higher impact of hemophilia on daily activities.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain). Of this, social activity RP and impact has 16 items which were scored on 3 or 4 points ordinal scale. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated higher perceived risk of having a bleed while doing social activities and higher impact of hemophilia on social activities.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain. Of this, recreational activity RP \& impact has 34 items + larger bank of additional items. The items were scored on 3 or 4 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated higher perceived risk of having a bleed while doing recreational activities and higher impact of hemophilia on recreational activities.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain. Of this, school impact has 11 items and the items were scored on 3 or 4 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated higher impact of hemophilia on school activities.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain. Of this, preoccupation has 3 items which were scored on 3 or 4 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated greater preoccupation related to hemophilia.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain. Of this, treatment burden has 7 items which were scored on 3 or 4 points ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept \& applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated lower perceived burden of the hemophilia treatment.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain). Of this, pain domain (Hurt) consists of two items, assessed using an 11-point numeric rating scale where 0 = no hurt and 10 = a lot of hurt. The data reported here are from participants who answered the following question "Did you get a bleed in the past 7 days? ( If yes, how much did the bleed hurt?)." Data is reported only for categories/timepoints with non-zero values.

CATCH was used to measure the effect of hemophilia and its treatment on pediatric participants (aged 8-17 years). The pediatric version has 7 domains (daily activity RP and impact, social activity RP and impact, recreational activity RP and impact, school impact, preoccupation, treatment burden, and pain. Of this, pain domain (Hurt) consists of two items, assessed using an 11-point numeric rating scale where 0 = no hurt and 10 = a lot of hurt. The data reported here are from participants who answered the following question "What is the WORST that your body has hurt over the past 7 days". Data is reported only for categories/timepoints with non-zero values.

CATCH was used to measure the effect of hemophilia and its treatment on caregivers of pediatric participants (aged <8 years). The caregiver version has 2 domains (preoccupation and treatment burden). Of this, preoccupation has 13 items with each of the items were scored on 4 or 5 ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept and applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated greater preoccupation related to hemophilia.

CATCH was used to measure the effect of hemophilia and its treatment on caregivers of pediatric participants (aged <8 years). The caregiver version has 2 domains (preoccupation and treatment burden). Of this, treatment burden has 8 items which were scored on 4 or 5 ordinal scales. Raw domain scores were obtained by calculating the mean of the item scores for all items within the corresponding concept and applying a linear transformation. The transformed scores range from 0-100 scale. Higher scores indicated greater perceived burden of the hemophilia treatment.

The Emicizumab Preference Survey is a fit-for-purpose questionnaire developed by the sponsor to record the participant's preference for treatment with subcutaneous (SC) emicizumab, intravenous (IV) factor VIIII (FVIII), or no preference. The 95% confidence intervals were calculated using the Pearson-Clopper method.

The Emicizumab Preference Survey is a fit-for-purpose questionnaire developed by the sponsor to record the caregiver's preference for their child's treatment with subcutaneous (SC) emicizumab, intravenous (IV) factor VIIII (FVIII), or no preference. The 95% confidence intervals were calculated using the Pearson-Clopper method.

The HJHS measures joint health of the joints (knees, ankles, and elbows) most commonly affected by bleeding in hemophilia. The HJHS 2.1 provides joint specific total scores which are added to obtain the sum of joints totals and also a global gait score. These two scores are then added to obtain HJHS total score. The minimum score per joint is 0, the maximum score is 20. In addition, Gait is scored on a scale from 0 to 4 based on the number of skills that are not within the normal limits. The total score is the sum of scores across all six joints plus the gait score (range from 0 to 124, with 0 being normal and 124 being the most severe disease). A higher score indicates worse joint health.

For physical activity assessment, participants ≥5 years of age were instructed to wear the study accelerometry device on the wrist continuously (24 hours/day) every day for the designated 2-week periods during the study. A participant was considered to be compliant with the physical activity assessments if they wore the study device continuously (≥8 hours/day) every day for at least 8 days of each of the designated 2-week periods during the study. If this compliance criterion was not reached at a specific timepoint the participant was not included in the analysis of the designated 2-week periods where compliance was not reached. Daily measurements were averaged over the 14-days timepoint. Activity count was a measure of the acceleration measured by the device. The daily peak activity duration was defined as the sum of moderate to vigorous activity per day (in minutes).

For physical activity assessment, participants ≥5 years of age were instructed to wear the study accelerometry device on the wrist continuously (24 hours/day) every day for the designated 2-week periods during the study. A participant was considered to be compliant with the physical activity assessments if they wore the study device continuously (≥8 hours/day) every day for at least 8 days of each of the designated 2-week periods during the study. If this compliance criterion was not reached at a specific timepoint the participant was not included in the analysis of the designated 2-week periods where compliance was not reached. Daily measurements were averaged over the 14-days timepoint. Activity count was a measure of the acceleration measured by the device.

The MBQ is a validated measure for menorrhagia and used to assess impact on the menstrual bleed-related heaviness, pain, irregularity, and quality of life (QoL). The MBQ is a 20-item measure covering four aspects regarding heavy menstrual bleeding: heaviness (8 items), QoL (8 items), irregularity (3 item), and pain (1 item). The MBQ score ranges from 0 to 75. Higher scores indicate a worse quality of life and more severe symptoms.

The MBQ is a validated measure for menorrhagia and used to assess impact on the menstrual bleed-related heaviness, pain, irregularity, and quality of life (QoL). The MBQ is a 20-item measure covering four aspects regarding heavy menstrual bleeding: heaviness (8 items), QoL (8 items), irregularity (3 item), and pain (1 item). The total score for heaviness subscale ranges from 0 to 29. Higher score indicates more heavy bleeding.

The MBQ is a validated measure for menorrhagia and used to assess impact on the menstrual bleed-related heaviness, pain, irregularity, and quality of life (QoL). The MBQ is a 20-item measure covering four aspects regarding heavy menstrual bleeding: heaviness (8 items), QoL (8 items), irregularity (3 item), and pain (1 item). The total score for QoL subscale ranges from 0 to 37. Higher scores indicate a worse QoL.

The MBQ is a validated measure for menorrhagia and used to assess impact on the menstrual bleed-related heaviness, pain, irregularity, and quality of life (QoL). The MBQ is a 20-item measure covering four aspects regarding heavy menstrual bleeding: heaviness (8 items), QoL (8 items), irregularity (3 item), and pain (1 item). The total score for irregularity subscale ranges from 0 to 6. Higher score indicates more irregularity.

The MBQ is a validated measure for menorrhagia and used to assess impact on the menstrual bleed-related heaviness, pain, irregularity, and quality of life (QoL). The MBQ is a 20-item measure covering four aspects regarding heavy menstrual bleeding: heaviness (8 items), QoL (8 items), irregularity (3 item), and pain (1 item). The total score for pain subscale ranges from 0 to 3. Higher score indicates severe pain.

The Menstruation Diary used a PBAC, which has shown good correlation with menstrual blood loss. The PBAC is a chart that records the occurrence and size of clots, and the number of episodes of heavy bleeding (flooding), as well as depicts the amount of blood loss during a cycle.The PBAC records pad and tampon use (as either light [1 point], medium [5 points], or heavy [10 points] flow), clots (small [1 point] or large [5 points]), and flooding episodes (1 point each) which can be recorded as many times as necessary any day of the month. The PBAC is scored from 0 (no bleeding) onwards, with a score of >100 defining abnormal coagulation and heavy menstrual bleeding (corresponds to >80ml of blood loss per menstrual cycle).

An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including abnormal laboratory values or abnormal clinical test results), symptoms, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. As per WHO toxicity grading, Grade 1= mild, 2= moderate, 3=severe, 4=life threatening.

An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including abnormal laboratory values or abnormal clinical test results), symptoms, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product.

An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including abnormal laboratory values or abnormal clinical test results), symptoms, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. The following signs and symptoms were recognized as potential thromboembolism (i.e., dyspnea, chest pain, leg pain, or swelling; or if in the head, headache, numbness in the face, eye pain or swelling, or vision impairment).

An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including abnormal laboratory values or abnormal clinical test results), symptoms, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. TMA is used to describe a group of disorders with clinical features of microangiopathic hemolytic anemia, thrombocytopenia, and organ damage that can include the kidneys, gastrointestinal system, central nervous system, etc.

An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including abnormal laboratory values or abnormal clinical test results), symptoms, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product. Injection-site reactions are defined as AEs related that occur within 24 hours after study drug administration and are judged to be related to the study drug injection. Local injection-site reactions included erythema, hematoma, rash, discomfort, pain, and pruritus and were mostly of mild and moderate intensity. As per WHO toxicity grading, Grade 1= mild, 2= moderate, 3=severe, 4=life threatening.

An AE was defined as any untoward medical occurrence in a participant administered a pharmaceutical product and which does not necessarily have to have a causal relationship with the treatment. An AE can therefore be any unfavorable and unintended sign (including abnormal laboratory values or abnormal clinical test results), symptoms, or disease temporally associated with the use of a pharmaceutical product, whether or not considered related to the pharmaceutical product.

An abnormal laboratory value was defined as a laboratory test result outside of the normal range for hematology or serum chemistry parameters. The WHO toxicity grading scale, which ranges from Grades 1 to 4 (least severe to most severe, respectively; Grade 0 is within normal range), was used for assessing the severity of laboratory abnormalities and adverse events (WHO 2003). Not every laboratory abnormality qualified as an adverse event; an abnormality was reported as an adverse event if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment (e.g., dosage modification, treatment interruption or discontinuation); resulted in a medical intervention or a change in concomitant therapy; or was clinically significant in the investigator's judgment.

The number of participants with adverse events of changes from baseline in vital signs is reported here. Vital signs measurements consisted of heart and respiratory rate, temperature, and systolic and diastolic blood pressures, with an abnormal vital sign value being outside of the normal range. An abnormal vital sign result was reported as an adverse event if it met any of the following criteria: was accompanied by clinical symptoms; resulted in a change in study treatment (e.g., dosage modification, treatment interruption or discontinuation); resulted in a medical intervention or a change in concomitant therapy; or was clinically significant in the investigator's judgment. All of the adverse events reported here were assessed independently by the investigator as not related to treatment with emicizumab.

Participants were considered to be ADA positive if they were ADA negative at baseline but develop an ADA response following study drug administration (treatment-induced ADA response), or if they were ADA positive at baseline and the titer of one or more post-baseline samples is at least 4-fold greater than the titer of the baseline sample (treatment-enhanced ADA response). The sum of all visits has been reported here.

Central laboratory measurement of anti-FVIII inhibitory antibodies (inhibitors) was performed using a Chromogenic Bethesda Assay (CBA). Participants who develop anti-FVIII inhibitors (titer ≥ 0.6 Bethesda units per milliliter [BU/mL]) following study drug administration were summarized.