Atopic DermatitisPhase 1NCT04668066
Study to Evaluate Safety and Tolerability of PF-07242813 in Healthy Participants and Participants With Atopic Dermatitis
A Phase 1 study testing PF-07242813 in people with Atopic Dermatitis, run by Pfizer at 7 sites in United States.
Trial summary
This is the first time PF-07242813 will be given to humans. The purpose of the study is to evaluate the safety, tolerability, and pharmacokinetics of escalating single and repeat doses of PF-07242813 in healthy participants and in participants with moderate to severe atopic dermatitis. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Atopic Dermatitis
- What is being tested?
- PF-07242813
- Type of treatment
- Injection or infusion
- Could I receive a placebo?
- Yes, some participants may receive a placebo
- How many people
- 121 participants
- Where
- 7 sitesUnited States
- Study dates
- 10 Dec 2020to 27 Dec 2022
- Phase
- Phase 1
- Are there results?
- Yes, posted in the registrySummary in the doctors' view
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- BMI of 17.5 to 30.5 kg/m2; and BW>50 kg (110 lbs)
- Overtly healthy as determined by medical evaluation including medical history, physical examination, vital sign assessments, temperature, 12-lead ECGs, laboratory tests
- Japanese cohort: healthy adults of Japanese descent, where parents and grandparents are Japanese
- Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the ICD and in this protocol
- Have a clinical diagnosis of chronic atopic dermatitis (also known as atopic eczema) for approximately 1 year prior to Day 1 and have the diagnosis of AD confirmed (Hanifin and Rajka criteria of AD).
- Either have had an inadequate response to treatment with topical medications (for at least 4 consecutive weeks within 1 year of the first dose of the study drug) OR Have a documented reason why topical treatments are considered medically inappropriate (eg, because of important side effects or safety risks) within the last year.
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- Have moderate to severe AD (defined as having an affected BSA (captured as part of EASI) ≥10%, IGA ≥3, and EASI ≥12 at both the screening and baseline visits).
- Generally healthy adult, with no significant comorbidities.
- Mild or moderate asthma that is well-controlled (not requiring high dose inhaled corticosteroids, systemic [oral or parenteral] corticosteroids, or biologic asthma treatments).
- BMI of 17.5 to 40 kg/m2; and a total body weight >50 kg (110 lbs).
Who cannot join
- Evidence of active, latent, or inadequately treated infection with TB; History of HIV, hepatitis B or C infection; positive testing for HIV, HepB, HepC except HepB vaccination
- Medical or psychiatric condition that may increase the risk of study participation, or inappropriate for the study in investigator's judgement
- History of any lymphoproliferative disorder, evidence or history of clinically significant diseases
- History of systemic infection requiring hospitalization, parenteral antimicrobial therapy, or judged clinically significant by the investigator within 6 months
- Known history of or evidence of current endocrine disease
- Exposure to live or attenuated vaccines within 28 days of screening.
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- Have any malignancies or a history of malignancies except adequately treated or excised non-metastatic basal cell or squamous cell cancer of the skin, or cervical carcinoma in situ.
- Allergic disease (including drug allergies, but excluding untreated, asymptomatic, seasonal allergies at the time of dosing).
- Have undergone significant trauma or major surgery within 1 month of 1st dose of study drug.
- Use of prescription or nonprescription drugs, dietary or herbal supplements within 7 days or 5 half-lives (whichever is longer) prior to 1st dose of study drug.
- Females taking hormone replacement therapy may be eligible to participate in this study if they are willing to discontinue therapy at least 28 days prior to the first dose of study treatment and remain off hormonal therapy for the duration of the study.
- Positive urine drug test, alcohol intake more than 14 units per week or use of tobacco/nicotine containing products more than 5 cigarettes per day.
- Treatment with an investigational drug within 28 days or 5 half-lives preceding the first dose of study treatment (whichever is longer).
- Abnormal BP, ECG and lab tests including AST/ALT, total bilirubin and anterior pituitary hormones, at screenings and/or baseline, based on pre-specified criteria per protocol.
- Unwilling or unable to comply with the Lifestyle guidance specified in this protocol (Lifestyle Considerations section).
- Evidence of active, latent, or inadequately treated TB.
- History of or positive result for HIV or hepatitis infection. Positive Covid-19 test (if collected).
- Significant medical or psychiatric condition, including suicidal ideation (C-SSRS screening assessment noting suicidal ideation in prior 6 months is not eligible).
- H/o or current endocrine disease.
- History of systemic infection requiring hospitalization, parenteral antimicrobial treatment or considered significant by Investigator.
- History of or current malignancy, with the exception of non-metastatic BCC, squamous cell skin or cervical in situ.
- Currently have active forms of other inflammatory skin diseases.
- Have history of or current evidence of skin disease at the time of Day 1 that would interfere with evaluation of atopic dermatitis or response to treatment.
- Have active chronic or acute skin infection requiring treatment with systemic antibiotics, antivirals, antiparasitics, antiprotozoals, or antifungals within 2 weeks prior to Day 1, or superficial skin infections within 1 week prior to Day 1.
- Score of >5 on the Fitzpatrick Skin Type Assessment.
- History of anaphylaxis with the exception of participants with sensitivity and/or anaphylaxis only to a single, avoidable allergen.
Trial locations and contacts
7 sites in 1 country.
7 sites in 1 country
United States7 sites
Anaheim Clinical Trials, LLC
Anaheim, California, 92801
First OC Dermatology
Fountain Valley, California, 92708
Keck School of Medicine of USC
Los Angeles, California, 90033
USC/Norris Comprehensive Cancer Center
Los Angeles, California, 90033
Aspen Clinical Research
Orem, Utah, 84058
Vital Prospects Clinical Research Institute, PC
Tulsa, Oklahoma, 74136
Orange County Research Center
Tustin, California, 92780
About this study
Official title: A PHASE 1 FIRST IN HUMAN, RANDOMIZED, DOUBLE BLIND, SPONSOR OPEN, PLACEBO-CONTROLLED, SINGLE- AND MULTIPLE DOSE ESCALATION, PARALLEL GROUP STUDY TO EVALUATE THE SAFETY, TOLERABILITY, PHARMACOKINETICS AND PHARMACODYNAMICS OF PF 07242813 IN HEALTHY PARTICIPANTS AND PARTICIPANTS WITH ATOPIC DERMATITIS
This is the first time PF-07242813 will be given to humans. The purpose of the study is to evaluate the safety, tolerability, and pharmacokinetics of escalating single and repeat doses of PF-07242813 in healthy participants and in participants with moderate to severe atopic dermatitis. An additional goal is to assess the pharmacodynamics of PF-07242813 in participants with moderate to severe AD, including potential effects on clinical signs and symptoms.
- Conditions
- Atopic Dermatitis
- Being tested
- PF-07242813, Placebo
- Keywords
- Atopic Dermatitis, inflammatory skin disease
- Medical subject headings
- Dermatitis, Atopic, Dermatitis
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
PF-07242813Drug
PF-07242813 given intravenously or subcutaneous
PlaceboDrug
Placebo given intravenously or subcutaneous
| Study group | Role | What they receive |
|---|---|---|
| Single ascending doses of PF-07242813 or placebo in healthy participants | Experimental | Participants will receive a single intravenous dose of either PF-07242813 or placebo Receives: Drug: PF-07242813; Drug: Placebo |
| Multiple ascending doses of PF-07242813 or placebo in healthy participants | Experimental | Participants will receive multiple subcutaneous doses PF-07242813 or placebo Receives: Drug: PF-07242813; Drug: Placebo |
| Single dose of PF-07242813 or placebo in participants with moderate to severe atopic dermatitis | Experimental | Participants will receive a single intravenous dose of either PF-07242813 or placebo Receives: Drug: PF-07242813; Drug: Placebo |
What is being measured
The primary outcome is the main question the study is designed to answer.
Part 1: SAD Cohorts: Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment Emergent Serious Adverse Events (TESAEs)
An adverse event (AE) was any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect or other important medical events. An AE was considered as treatment emergent if the event started during the effective duration of treatment. All events that started on or after the first dosing day up to the last dose plus the lag time were considered as TEAEs.
Measured: From start of study treatment on Day 1 to Day 71
Part 1: MAD Cohorts: Number of Participants With TEAEs and TESAEs
An AE was any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect or other important medical events. An AE was considered as treatment emergent if the event started during the effective duration of treatment. All events that started on or after the first dosing day up to the last dose plus the lag time were considered as TEAEs.
Measured: From start of study treatment on Day 1 to Day 99
Part 2: Number of Participants With TEAEs and TESAEs
An AE was any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect or other important medical events. An AE was considered as treatment emergent if the event started during the effective duration of treatment. All events that started on or after the first dosing day up to the last dose plus the lag time were considered as TEAEs.
Measured: From start of study treatment on Day 1 to Week 16
Part 1: SAD Cohorts: Number of Participants With Clinically Significant Findings in Vital Signs
Vital signs included blood pressure, pulse rate, respiratory rate and temperature. Temperature was measured by oral, tympanic, or temporal artery method. Blood pressure and respiratory rate were measured with the participant in a supine position after 5 minutes of rest for the participant. Clinically significant findings were determined by the investigator.
Measured: From initiation of treatment to day 71
Part 1: MAD Cohorts: Number of Participants With Clinically Significant Findings in Vital Signs
Vital signs included blood pressure, pulse rate, respiratory rate and temperature. Temperature was measured by oral, tympanic, or temporal artery method. Blood pressure and respiratory rate were measured with the participant in a supine position after 5 minutes of rest for the participant. Clinically significant findings were determined by the investigator.
Measured: From start of study treatment on Day 1 to Day 99
Part 2: Number of Participants With Clinically Significant Findings in Vital Signs
Vital signs included blood pressure, pulse rate, respiratory rate and temperature. Temperature was measured by oral, tympanic, or temporal artery method. Blood pressure and respiratory rate were measured with the participant in a supine position after 5 minutes of rest for the participant. Clinically significant findings were determined by the investigator.
Measured: From start of study treatment on Day 1 to Week 16
Part 1: SAD Cohorts: Number of Participants With Laboratory Test Abnormalities
Pre-defined criteria for laboratory parameters were hemoglobin (HGB) (<0.8* Lower limit normal (LLN)), Erythrocyte (Ery). Mean Corpuscular (MC) Volume (<0.9* LLN), Ery MC Hemoglobin (<0.9* LLN), Ery. MC HGB Concentration (<0.9* LLN), Leukocytes (<0.6* LLN), Neutrophils (<0.8* LLN), Bilirubin (>1.5* Upper limit normal (ULN)), Aspartate Aminotransferase (>3.0* ULN), Urea Nitrogen (>1.3* ULN), Creatinine (>1.3* ULN), Urate (>1.2* ULN). Number of participants with any laboratory test abnormalities meeting pre-defined criteria was reported in this outcome measure.
Measured: Baseline (last pre-dose measurement) to Day 71
Part 1: MAD Cohorts: Number of Participants With Laboratory Test Abnormalities
Pre-defined criteria for laboratory parameters were HGB (<0.8* LLN), Ery MCV (<0.9* LLN), Ery MC Hemoglobin (<0.9* LLN), Ery. MC HGB Concentration (<0.9* LLN), Leukocytes (<0.6* LLN), Neutrophils (<0.8* LLN), Bilirubin (>1.5* ULN), Aspartate Aminotransferase (>3.0* ULN), Urea Nitrogen (>1.3* ULN), Creatinine (>1.3* ULN), Urate (>1.2* ULN). Number of participants with any laboratory test abnormalities meeting pre-defined criteria was reported in this outcome measure.
Measured: Baseline (last pre-dose measurement) to Day 99
Part 2: Number of Participants With Laboratory Test Abnormalities
Pre-defined criteria for laboratory parameters were HGB (<0.8* LLN), Ery MCV (<0.9* LLN), Ery MC Hemoglobin (<0.9* LLN), Ery. MC HGB Concentration (<0.9* LLN), Leukocytes (<0.6* LLN), Neutrophils (<0.8* LLN), Bilirubin (>1.5* ULN), Aspartate Aminotransferase (>3.0* ULN), Urea Nitrogen (>1.3* ULN), Creatinine (>1.3* ULN), Urate (>1.2* ULN). Number of participants with any laboratory test abnormalities meeting pre-defined criteria was reported in this outcome measure.
Measured: Baseline (last pre-dose measurement) to Week 16
Part 1: SAD Cohorts Only: Number of Participants With Cardiac Telemetry Abnormalities
Cardiac telemetry was collected in Part 1 SAD cohorts only. Number of participants with any cardiac telemetry abnormalities were reported in this outcome measure.
Measured: From pre-dose up to 6 hours post dose on Day 1
Part 1: SAD Cohorts: Number of Participants With Clinically Significant Findings in Electrocardiogram (ECG)
Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR interval, QT interval, corrected QT (QTc) intervals and QRS complex. ECGs were performed after the participant had rested quietly for at least 10 minutes in a supine position. Clinically significant findings were determined by the investigator.
Measured: From pre-dose on Day 1 up to Day 71
Part 1: MAD Cohorts: Number of Participants With Clinically Significant Findings in ECG
Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR interval, QT interval, QTc intervals and QRS complex. ECGs were performed after the participant had rested quietly for at least 10 minutes in a supine position. Clinically significant findings were determined by the investigator.
Measured: From pre-dose on Day 1 up to Day 99
Part 2: Number of Participants With Clinically Significant Findings in ECG
Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR interval, QT interval, QTc intervals and QRS complex. ECGs were performed after the participant had rested quietly for at least 10 minutes in a supine position. Clinically significant findings were determined by the investigator.
Measured: From pre-dose on week 1 to week 16
Secondary outcomes (10)
Part 1: SAD Cohorts: Area Under the Serum Concentration Time Profile From Time Zero to the Time of the Last Quantifiable Concentration (AUClast) for PF-07242813
AUClast was calculated using the linear/log trapezoidal method.
Measured: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Area Under the Serum Concentration Time Profile From Time Zero Extrapolated to Infinite Time (AUCinf) for PF-07242813
AUCinf was determined as AUClast + (Clast divided by kel), where Clast = predicted serum concentration at the last quantifiable time point estimated from the log-linear regression analysis and kel= terminal phase rate constant.
Measured: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Maximum Serum Concentration (Cmax) for PF-07242813
Measured: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Time to Reach Maximum Concentration (Tmax) for PF-07242813
Measured: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Terminal Elimination Half Life (t1/2) for PF-07242813
t1/2 was determined by "Loge(2)/kel", where kel was the terminal phase rate constant calculated by a linear regression of the loglinear -concentration time- curve.
Measured: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: MAD Cohorts: Area Under the Serum Concentration Time Profile Over the Dosing Interval (AUCtau) for PF-07242813
Area under the serum concentration time- profile over the dosing interval tau where tau=2 weeks (336 hours).
Measured: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 1: MAD Cohorts: Cmax for PF-07242813
Measured: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336,672,1008,1344,1680hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 1: MAD Cohorts: Tmax for PF-07242813
Measured: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336,672,1008,1344,1680hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 1: MAD Cohorts: Terminal Elimination Half Life (t1/2) for PF-07242813
t1/2 was determined by "Loge(2) per kel", where kel was the terminal phase rate constant calculated by a linear regression of the log/linear -concentration time- curve.
Measured: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336,672,1008,1344,1680hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 2: Percent Change From Baseline in Eczema Area and Severity Index (EASI) Total Score at Week 6
EASI quantifies severity of AD based on severity of lesion clinical signs and percentage (%) of body surface area (BSA) affected. Severity of clinical signs of AD lesions (erythema, induration/papulation, excoriation and lichenification) were scored separately for each of 4 body regions (head and neck, upper limbs, trunk [including axillae and groin)] and lower limbs [including buttocks]) on a 4-point scale: 0= absent; 1= mild; 2= moderate; 3= severe. EASI area score was based on % BSA with AD in body region: 0 (0%), 1 (>0 to <10%), 2 (10 to <30%), 3 (30 to <50%), 4 (50 to <70%), 5 (70 to <90%) and 6 (90 to 100%). Total EASI score =0.1*Ah*(Eh+Ih+Exh+Lh) + 0.2*Au*(Eu+Iu+ExU+Lu) + 0.3*At*(Et+It+Ext+Lt) + 0.4*Al*(El+Il+Exl+Ll); A = EASI area score; E = erythema; I = induration/papulation; Ex = excoriation; L = lichenification; h = head and neck; u = upper limbs; t = trunk; l = lower limbs. Total EASI score ranged from 0.0 to 72.0, with higher scores indicating greater severity of AD.
Measured: Baseline, Week 6
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted16 Dec 2020
- Study start10 Dec 2020
- Primary completion27 Dec 2022
- Study completion27 Dec 2022
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Posted resultsParticipant flow, outcome measures and adverse events reported by the sponsor.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Atopic DermatitisStudies of the same condition, open and under way.
- More trials run by PfizerThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Sequential
- Masking
- Triple blind
- Who is masked
- Participant, Care provider, Investigator
- Enrolment
- 121 participants (actual)
Sponsor and investigators
- Lead sponsor
- Pfizer
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
- Investigators
- Pfizer CT.gov Call Center, Study director, Pfizer
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT04668066
- Sponsor's protocol ID
- C4461001
- Status last verified
- Dec 2023
- First submitted
- 8 Dec 2020
- Last updated
- 3 Jun 2024
- Results posted
- Yes, on ClinicalTrials.gov
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
- Individual data sharing
- No: Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical\_trials/trial\_data\_and\_results/data\_requests.
Publications
Danto SI, Qiu R, Zhou Y, Pradhan V, Rath N, Page KM, Li X, Peeva E, Vincent MS, Gale JD. A phase 1 study of PF-07242813, an anti-CD1a antibody, in healthy participants and in patients with atopic dermatitis. JID Innov. 2026 Aug 10;6(6):100523. doi: 10.1016/j.xjidi.2026.100523. eCollection 2026 Nov.
PubMed 42921257
Study at a glance
From the registry record, last updated by the sponsor on 3 Jun 2024. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A PHASE 1 FIRST IN HUMAN, RANDOMIZED, DOUBLE BLIND, SPONSOR OPEN, PLACEBO-CONTROLLED, SINGLE- AND MULTIPLE DOSE ESCALATION, PARALLEL GROUP STUDY TO EVALUATE THE SAFETY, TOLERABILITY, PHARMACOKINETICS AND PHARMACODYNAMICS OF PF 07242813 IN HEALTHY PARTICIPANTS AND PARTICIPANTS WITH ATOPIC DERMATITIS
- ClinicalTrials.gov ID
- NCT04668066
- Acronym / sponsor ID
- C4461001
- Conditions
- Atopic Dermatitis
- Keywords
- Atopic Dermatitis, inflammatory skin disease
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 121 participants (actual)
- Lead sponsor
- PfizerIndustry (pharma, biotech, devices)
- Study start
- 10 Dec 2020 (actual)
- Primary completion
- 27 Dec 2022 (actual)
- Study completion
- 27 Dec 2022 (actual)
- First posted
- 16 Dec 2020 (actual)
- Results
- Posted 3 Jun 2024
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This is the first time PF-07242813 will be given to humans. The purpose of the study is to evaluate the safety, tolerability, and pharmacokinetics of escalating single and repeat doses of PF-07242813 in healthy participants and in participants with moderate to severe atopic dermatitis. An additional goal is to assess the pharmacodynamics of PF-07242813 in participants with moderate to severe AD, including potential effects on clinical signs and symptoms.
Study design
- Primary purpose
- Basic science
- Allocation
- Randomised
- Intervention model
- Sequential
- Masking
- Triple blind (participant, care provider, investigator)
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Single ascending doses of PF-07242813 or placebo in healthy participants | Experimental | Drug: PF-07242813, Drug: PlaceboParticipants will receive a single intravenous dose of either PF-07242813 or placebo |
| Multiple ascending doses of PF-07242813 or placebo in healthy participants | Experimental | Drug: PF-07242813, Drug: PlaceboParticipants will receive multiple subcutaneous doses PF-07242813 or placebo |
| Single dose of PF-07242813 or placebo in participants with moderate to severe atopic dermatitis | Experimental | Drug: PF-07242813, Drug: PlaceboParticipants will receive a single intravenous dose of either PF-07242813 or placebo |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (10 listed)
- BMI of 17.5 to 30.5 kg/m2; and BW>50 kg (110 lbs)
- Overtly healthy as determined by medical evaluation including medical history, physical examination, vital sign assessments, temperature, 12-lead ECGs, laboratory tests
- Japanese cohort: healthy adults of Japanese descent, where parents and grandparents are Japanese
- Capable of giving signed informed consent, which includes compliance with the requirements and restrictions listed in the ICD and in this protocol
- Have a clinical diagnosis of chronic atopic dermatitis (also known as atopic eczema) for approximately 1 year prior to Day 1 and have the diagnosis of AD confirmed (Hanifin and Rajka criteria of AD).
Key exclusion criteria (26 listed)
- Evidence of active, latent, or inadequately treated infection with TB; History of HIV, hepatitis B or C infection; positive testing for HIV, HepB, HepC except HepB vaccination
- Medical or psychiatric condition that may increase the risk of study participation, or inappropriate for the study in investigator's judgement
- History of any lymphoproliferative disorder, evidence or history of clinically significant diseases
- History of systemic infection requiring hospitalization, parenteral antimicrobial therapy, or judged clinically significant by the investigator within 6 months
- Known history of or evidence of current endocrine disease
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| PF-07242813PF-07242813 given intravenously or subcutaneous | Drug | Multiple ascending doses of PF-07242813 or placebo in healthy participants, Single ascending doses of PF-07242813 or placebo in healthy participants, Single dose of PF-07242813 or placebo in participants with moderate to severe atopic dermatitis |
| PlaceboPlacebo given intravenously or subcutaneous | Drug | Multiple ascending doses of PF-07242813 or placebo in healthy participants, Single ascending doses of PF-07242813 or placebo in healthy participants, Single dose of PF-07242813 or placebo in participants with moderate to severe atopic dermatitis |
Primary outcome
Part 1: SAD Cohorts: Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment Emergent Serious Adverse Events (TESAEs)
Time frame: From start of study treatment on Day 1 to Day 71
An adverse event (AE) was any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect or other important medical events. An AE was considered as treatment emergent if the event started during the effective duration of treatment. All events that started on or after the first dosing day up to the last dose plus the lag time were considered as TEAEs.
Part 1: MAD Cohorts: Number of Participants With TEAEs and TESAEs
Time frame: From start of study treatment on Day 1 to Day 99
An AE was any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect or other important medical events. An AE was considered as treatment emergent if the event started during the effective duration of treatment. All events that started on or after the first dosing day up to the last dose plus the lag time were considered as TEAEs.
Part 2: Number of Participants With TEAEs and TESAEs
Time frame: From start of study treatment on Day 1 to Week 16
An AE was any untoward medical occurrence in a participant temporally associated with the use of study intervention, whether or not considered related to the study intervention. An SAE was defined as any untoward medical occurrence that, at any dose: resulted in death; required inpatient hospitalization or prolongation of existing hospitalization; was life-threatening; resulted in persistent or significant disability/incapacity; was a congenital anomaly/birth defect or other important medical events. An AE was considered as treatment emergent if the event started during the effective duration of treatment. All events that started on or after the first dosing day up to the last dose plus the lag time were considered as TEAEs.
Part 1: SAD Cohorts: Number of Participants With Clinically Significant Findings in Vital Signs
Time frame: From initiation of treatment to day 71
Vital signs included blood pressure, pulse rate, respiratory rate and temperature. Temperature was measured by oral, tympanic, or temporal artery method. Blood pressure and respiratory rate were measured with the participant in a supine position after 5 minutes of rest for the participant. Clinically significant findings were determined by the investigator.
Part 1: MAD Cohorts: Number of Participants With Clinically Significant Findings in Vital Signs
Time frame: From start of study treatment on Day 1 to Day 99
Vital signs included blood pressure, pulse rate, respiratory rate and temperature. Temperature was measured by oral, tympanic, or temporal artery method. Blood pressure and respiratory rate were measured with the participant in a supine position after 5 minutes of rest for the participant. Clinically significant findings were determined by the investigator.
Part 2: Number of Participants With Clinically Significant Findings in Vital Signs
Time frame: From start of study treatment on Day 1 to Week 16
Vital signs included blood pressure, pulse rate, respiratory rate and temperature. Temperature was measured by oral, tympanic, or temporal artery method. Blood pressure and respiratory rate were measured with the participant in a supine position after 5 minutes of rest for the participant. Clinically significant findings were determined by the investigator.
Part 1: SAD Cohorts: Number of Participants With Laboratory Test Abnormalities
Time frame: Baseline (last pre-dose measurement) to Day 71
Pre-defined criteria for laboratory parameters were hemoglobin (HGB) (<0.8* Lower limit normal (LLN)), Erythrocyte (Ery). Mean Corpuscular (MC) Volume (<0.9* LLN), Ery MC Hemoglobin (<0.9* LLN), Ery. MC HGB Concentration (<0.9* LLN), Leukocytes (<0.6* LLN), Neutrophils (<0.8* LLN), Bilirubin (>1.5* Upper limit normal (ULN)), Aspartate Aminotransferase (>3.0* ULN), Urea Nitrogen (>1.3* ULN), Creatinine (>1.3* ULN), Urate (>1.2* ULN). Number of participants with any laboratory test abnormalities meeting pre-defined criteria was reported in this outcome measure.
Part 1: MAD Cohorts: Number of Participants With Laboratory Test Abnormalities
Time frame: Baseline (last pre-dose measurement) to Day 99
Pre-defined criteria for laboratory parameters were HGB (<0.8* LLN), Ery MCV (<0.9* LLN), Ery MC Hemoglobin (<0.9* LLN), Ery. MC HGB Concentration (<0.9* LLN), Leukocytes (<0.6* LLN), Neutrophils (<0.8* LLN), Bilirubin (>1.5* ULN), Aspartate Aminotransferase (>3.0* ULN), Urea Nitrogen (>1.3* ULN), Creatinine (>1.3* ULN), Urate (>1.2* ULN). Number of participants with any laboratory test abnormalities meeting pre-defined criteria was reported in this outcome measure.
Part 2: Number of Participants With Laboratory Test Abnormalities
Time frame: Baseline (last pre-dose measurement) to Week 16
Pre-defined criteria for laboratory parameters were HGB (<0.8* LLN), Ery MCV (<0.9* LLN), Ery MC Hemoglobin (<0.9* LLN), Ery. MC HGB Concentration (<0.9* LLN), Leukocytes (<0.6* LLN), Neutrophils (<0.8* LLN), Bilirubin (>1.5* ULN), Aspartate Aminotransferase (>3.0* ULN), Urea Nitrogen (>1.3* ULN), Creatinine (>1.3* ULN), Urate (>1.2* ULN). Number of participants with any laboratory test abnormalities meeting pre-defined criteria was reported in this outcome measure.
Part 1: SAD Cohorts Only: Number of Participants With Cardiac Telemetry Abnormalities
Time frame: From pre-dose up to 6 hours post dose on Day 1
Cardiac telemetry was collected in Part 1 SAD cohorts only. Number of participants with any cardiac telemetry abnormalities were reported in this outcome measure.
Part 1: SAD Cohorts: Number of Participants With Clinically Significant Findings in Electrocardiogram (ECG)
Time frame: From pre-dose on Day 1 up to Day 71
Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR interval, QT interval, corrected QT (QTc) intervals and QRS complex. ECGs were performed after the participant had rested quietly for at least 10 minutes in a supine position. Clinically significant findings were determined by the investigator.
Part 1: MAD Cohorts: Number of Participants With Clinically Significant Findings in ECG
Time frame: From pre-dose on Day 1 up to Day 99
Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR interval, QT interval, QTc intervals and QRS complex. ECGs were performed after the participant had rested quietly for at least 10 minutes in a supine position. Clinically significant findings were determined by the investigator.
Part 2: Number of Participants With Clinically Significant Findings in ECG
Time frame: From pre-dose on week 1 to week 16
Twelve lead ECGs were obtained using an ECG machine that automatically calculated the heart rate and measured PR interval, QT interval, QTc intervals and QRS complex. ECGs were performed after the participant had rested quietly for at least 10 minutes in a supine position. Clinically significant findings were determined by the investigator.
10 secondary outcomes
Part 1: SAD Cohorts: Area Under the Serum Concentration Time Profile From Time Zero to the Time of the Last Quantifiable Concentration (AUClast) for PF-07242813
Time frame: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Area Under the Serum Concentration Time Profile From Time Zero Extrapolated to Infinite Time (AUCinf) for PF-07242813
Time frame: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Maximum Serum Concentration (Cmax) for PF-07242813
Time frame: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Time to Reach Maximum Concentration (Tmax) for PF-07242813
Time frame: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: SAD Cohorts: Terminal Elimination Half Life (t1/2) for PF-07242813
Time frame: Pre-dose, 2, 6, 12, 24, 48, 72, 96, 336, 672 hours post-dose (for all cohorts); 1008 hours post-dose for all cohorts except 0.3 mg IV; 1344 and 1680 hours post-dose for all cohorts except 0.3 mg IV and 1 mg IV
Part 1: MAD Cohorts: Area Under the Serum Concentration Time Profile Over the Dosing Interval (AUCtau) for PF-07242813
Time frame: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 1: MAD Cohorts: Cmax for PF-07242813
Time frame: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336,672,1008,1344,1680hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 1: MAD Cohorts: Tmax for PF-07242813
Time frame: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336,672,1008,1344,1680hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 1: MAD Cohorts: Terminal Elimination Half Life (t1/2) for PF-07242813
Time frame: Day 1,15,29(Pre-dose,2,6,12,24,48,72,96 hours post-dose) Day 15,29(168hours post-dose) Day 29(336,672,1008,1344,1680hours post-dose) (For all cohorts); Day 1(168hours post-dose for all except 15mg and 50 mg post-dose)
Part 2: Percent Change From Baseline in Eczema Area and Severity Index (EASI) Total Score at Week 6
Time frame: Baseline, Week 6
Results and safety
Loading the posted results from ClinicalTrials.gov…
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 3 Jun 2024.
- Posted resultsParticipant flow, baseline, all outcome measures and adverse events.
- Derived from this study: PubMed 42921257Danto SI, Qiu R, Zhou Y, Pradhan V, Rath N, Page KM, Li X, Peeva E, Vincent MS, Gale JD. A phase 1 study of PF-07242813, an anti-CD1a antibody, in healthy participants and in patients with atopic dermatitis. JID Innov. 2026 Aug 10;6(6):100523. doi: 10.1016/j.xjidi.2026.100523. eCollection 2026 Nov.
- To obtain contact information for a study center near you, click here.Link provided by the sponsor.
- Individual participant dataSharing planned: No. Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical_trials/trial_data_and_results/data_requests.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
Pfizer CT.gov Call Center study director
Pfizer
7 sites in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing PF-07242813 in people with Atopic Dermatitis, run by Pfizer at 7 sites in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 10 inclusion and 26 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 3 Jun 2024. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 7 sites in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
Yes. Results are posted in the registry (first posted 3 Jun 2024). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Part 1: SAD Cohorts: Number of Participants With Treatment-Emergent Adverse Events (TEAEs) and Treatment Emergent Serious Adverse Events (TESAEs) (time frame: From start of study treatment on Day 1 to Day 71). The study lists 13 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT04668066, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 3 Jun 2024.