Psoriatic ArthritisNCT05621369
Psorcast Mobile Study
An observational study of Psoriatic Arthritis and Psoriasis, run by Sage Bionetworks at 1 site in United States.
Trial summary
The purpose of this study is to understand variation in the symptoms of psoriasis and psoriatic arthritis using simple, scalable smartphone-based measurements. This study uses an iPhone app to record these symptoms through questionnaires and sensors. Read more about this study
- Who is it for?
- Ages 18 years and olderHealthy volunteers can take part
- Conditions the study is for
- Psoriatic Arthritis, Psoriasis, Psoriatic Conditions
- What is being tested?
- Participant self-assessment surveys, Psoriasis Draw and Psoriasis Area Photo
- Type of treatment
- Lifestyle or therapy programme
- How many people
- 1,000 participants
- Where
- 1 siteUnited States
- Study dates
- 1 Jan 2022to 31 Jan 2027
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
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 years and older
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Study population: Adults with a compatible iPhone or iPod Touch who consent to particpate
Who may be able to join
- Adult age 18 and older who consent to participate in the study
- Own a compatible iPhone or iPod Touch device running iOS 12.2 or above
- Be able to read and understand an official language of the country of participation
Who cannot join
- Age 17 years or younger
- Not a resident of the a country where the app is approved for use
- Not have a personal (i.e., not shared) iPhone (4s or newer running iOS 8.0 or later)
- Not be able to read and understand an official language of the country of participation
Trial locations and contacts
1 site in 1 country.
About this study
Official title: Psorcast Study: A Smartphone-based Study of Psoriasis and Psoriatic Arthritis
The purpose of this study is to understand variation in the symptoms of psoriasis and psoriatic arthritis using simple, scalable smartphone-based measurements. This study uses an iPhone app to record these symptoms through questionnaires and sensors.
Read the detailed description
Psoriatic disease exhibits a spectrum of symptoms and can transition from psoriasis (PsO), largely affecting the skin, to psoriatic arthritis (PsA) involving widespread musculoskeletal inflammation. Early detection of the PsO-to-PsA transition and rapid administration of effective treatment is essential, as a delay in diagnosing PsA by as little as 6 months can lead to irreversible joint damage. This "ticking clock" paradigm drives the need for frequent monitoring and effective therapeutic intervention as early as possible to attenuate or possibly prevent disease progression. Using a suite of smartphone-based measurements in an app called Psorcast (psoriasis forecasts), we aim to aggregate weekly, symptom measurements from participants in a remote, longitudinal observational study to map the trajectories of treatment response and disease progression. In this study, we will explore measurements of psoriatic disease activity at least an order of magnitude more frequently (weekly vs. quarterly) than standard clinical practice or clinical trial designs. This study is not meant to provide a medical diagnosis, treatment, or medical advice. It is meant to provide a scalable, inexpensive, non-invasive and frequent measure and tracking of psoriasis and psoriatic arthritis for research purposes.
- Conditions
- Psoriatic Arthritis, Psoriasis, Psoriatic Conditions, Dermatologic Disease, Rheumatologic Disease, Psoriatic Nail
- Being tested
- Participant self-assessment surveys, Psoriasis Draw, Psoriasis Area Photo, Finger and Toe Photos, Digital Jar Open
- Keywords
- Psoriasis, Psoriatic Arthritis, Psoriatic Disease, Health app research, mHealth research, Mobile health research
- Medical subject headings
- Arthritis, Psoriatic, Psoriasis, Skin Diseases, Collagen Diseases, Arthralgia
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Participant self-assessment surveysBehavioural
At enrollment, participants are asked to complete a baseline health history, family history, and a participant-reported symptom inventory.
Psoriasis DrawBehavioural
Participants are asked to draw the location and size of psoriasis they currently experience. Participants are provided a body template onto which they can draw on their screen. Investigators estimate the percentage of body area affected.
Psoriasis Area PhotoBehavioural
Participants are asked to take a picture of a representative psoriasis plaque and indicate the location of the plaque. They are asked to take a picture of the same area over time. The investigators are developing computer vision algorithms to assess the plaque.
Finger and Toe PhotosBehavioural
Participants are asked to take pictures of the back of each hand and the top of each foot. These photos can be used to assess finger and toe swelling as well as psoriatic nail involvement. The investigators are developing computer vision algorithms to assess psoriatic nail involvement and digit swelling.
Digital Jar OpenBehavioural
Participants are asked to internally and externally rotate the phone as it rests on a flat surface. Participants perform each direction (internal and external) and each arm (left and right) in turn. Gyroscope sensors measure the degree of rotation.
30 Second WalkBehavioural
Participants are asked to walk in a straight line for 30 seconds. Gait is measured by gyroscope and accelerometer sensors. The investigators examine step-dependent and sequence-dependent features from these sensors. The investigators apply feature selection and classifier algorithms to analyze these data.
Psorcast mobile applicationOther
Participants complete all described behavioral interventions via a dedicated iPhone app, Psorcast.
| Study group | Role | What they receive |
|---|---|---|
| Participants with Psoriasis | People who report a diagnosis of Psoriasis. Participants are invited via the Psorcast mobile application to complete the following assessments: Participant self-assessment surveys, skin assessments (Psoriasis Area Draw and Psoriasis Area Photo) and musculoskeletal assessments (Finger/Toe Photos, Joint Count, Digital Jar Open, 30s Walk). Receives: Behavioral: Participant self-assessment surveys; Behavioral: Psoriasis Draw; Behavioral: Psoriasis Area Photo; Behavioral: Finger and Toe Photos; Behavioral: Digital Jar Open; Behavioral: 30 Second Walk; Other: Psorcast mobile application | |
| Participants with Psoriatic Arthritis | People who report a diagnosis of Psoriatic Arthritis. Participants are invited via the Psorcast mobile application to complete the following assessments: Participant self-assessment surveys, skin assessments (Psoriasis Area Draw and Psoriasis Area Photo) and musculoskeletal assessments (Finger/Toe Photos, Joint Count, Digital Jar Open, 30s Walk). Receives: Behavioral: Participant self-assessment surveys; Behavioral: Psoriasis Draw; Behavioral: Psoriasis Area Photo; Behavioral: Finger and Toe Photos; Behavioral: Digital Jar Open; Behavioral: 30 Second Walk; Other: Psorcast mobile application | |
| Participants without Psoriasis or Psoriatic Arthritis | People who report no prior diagnosis of Psoriasis or Psoriatic Arthritis. Participants are invited via the Psorcast mobile application to complete the following assessments: Participant self-assessment surveys, skin assessments (Psoriasis Area Draw and Psoriasis Area Photo) and musculoskeletal assessments (Finger/Toe Photos, Joint Count, Digital Jar Open, 30s Walk). Receives: Behavioral: Participant self-assessment surveys; Behavioral: Psoriasis Draw; Behavioral: Psoriasis Area Photo; Behavioral: Finger and Toe Photos; Behavioral: Digital Jar Open; Behavioral: 30 Second Walk; Other: Psorcast mobile application |
What is being measured
The primary outcome is the main question the study is designed to answer.
Results of participant self-assessment surveys
Results of participant self-assessment surveys will be analyzed using descriptive statistics. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Body surface area and location from the Psoriasis Draw assessment
The investigators will quantify body surface area and psoriasis area hotspots across the cohort. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Computer vision features from Psoriasis Area Photo assessment
The investigators apply visual processing and classifier algorithms to analyze the images from the Psoriasis Area Photo assessments. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Computer vision features from Finger/Toe Photos
The investigators apply visual processing and classifier algorithms to segment nails and joints from hand and foot photos. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Gyroscope and accelerometer sensor measurements from Digital Jar Open assessment
The investigators examine rotational features from gyroscope and accelerometer sensors. The investigators apply feature selection and classifier algorithms to analyze these data. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Gyroscope and accelerometer sensor measurements from 30-sec Walk assessment
The investigators examine step-dependent and sequence-dependent features from gyroscope and accelerometer sensors. The investigators apply feature selection and classifier algorithms to analyze these data. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Quantification and distribution of self-reported painful joints
The investigators will quantify the self-reported painful joints and, in particular, compare to measurements from the 30-sec Walk and Digital Jar Open to identify correlations. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Secondary outcomes (1)
App usage data for assessment of participant engagement
App usage data is used to gauge participant engagement throughout the study period. These results may also be compared with other intervention results.
Measured: Through study completion, an average of 2 years
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 Nov 2022
- Study start1 Jan 2022
- Primary completion31 Jan 2027 (estimated)
- Study completion31 Jan 2027 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Psoriatic ArthritisStudies of the same condition, open and under way.
- 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
- Observational
- Observational model
- Cohort
- Time perspective
- Prospective
- Enrolment
- 1,000 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Sage Bionetworks
- Sponsor type
- University, hospital or other
- Collaborators
- Brigham and Women's Hospital, NYU Langone Health, University of Pennsylvania, Harvard Medical School (HMS and HSDM), New York University
- Responsible party
- Sponsor
- Investigators
- Solveig Sieberts, Ph.D, Principal investigator, Sage BionetworksJose Scher, MD, Principal investigator, NYU Langone Medical CenterJoseph Merola, MD, MMSc, Principal investigator, Brigham and Women's Hospital & Harvard Medical School
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT05621369
- Sponsor's protocol ID
- 202110921
- Status last verified
- May 2026
- First submitted
- 10 Nov 2022
- Last updated
- 1 Jun 2026
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- Yes: We will share the de-identified data from participants who opt-in to data sharing during enrollment and consent.
Publications
DE Webster, RH Haberman, LM Perez Chada, M Tummalacherla, A Tediarjo, V Yadav, E Chaibub Neto, W MacDuffie, M DePhillips, E Sieg, S Catron, C Grant, W Francis, M Nguyen, M Yussuff, RL Castillo, D Yan, AL Neimann, SM Reddy, A Ogdie, A Kolivras, MR Kellen, LM Mangravite, SK Sieberts, L Omberg, JF Merola, JU Scher medRxiv 2022.04.13.22273676; doi: https://doi.org/10.1101/2022.04.13.22273676
Study at a glance
From the registry record, last updated by the sponsor on 1 Jun 2026. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Psorcast Study: A Smartphone-based Study of Psoriasis and Psoriatic Arthritis
- ClinicalTrials.gov ID
- NCT05621369
- Acronym / sponsor ID
- 202110921
- Conditions
- Psoriatic Arthritis, Psoriasis, Psoriatic Conditions, Dermatologic Disease, Rheumatologic Disease, Psoriatic Nail
- Keywords
- Psoriasis, Psoriatic Arthritis, Psoriatic Disease, Health app research, mHealth research, Mobile health research
- Study type
- Observational
- Recruitment status
- Active, not recruiting
- Enrolment
- 1,000 participants (estimated)
- Lead sponsor
- Sage BionetworksUniversity, hospital or other
- Collaborators
- Brigham and Women's Hospital, NYU Langone Health, University of Pennsylvania, Harvard Medical School (HMS and HSDM), New York University
- Study start
- 1 Jan 2022 (actual)
- Primary completion
- 31 Jan 2027 (estimated)
- Study completion
- 31 Jan 2027 (estimated)
- First posted
- 18 Nov 2022 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to understand variation in the symptoms of psoriasis and psoriatic arthritis using simple, scalable smartphone-based measurements. This study uses an iPhone app to record these symptoms through questionnaires and sensors.
Detailed description
Psoriatic disease exhibits a spectrum of symptoms and can transition from psoriasis (PsO), largely affecting the skin, to psoriatic arthritis (PsA) involving widespread musculoskeletal inflammation. Early detection of the PsO-to-PsA transition and rapid administration of effective treatment is essential, as a delay in diagnosing PsA by as little as 6 months can lead to irreversible joint damage. This "ticking clock" paradigm drives the need for frequent monitoring and effective therapeutic intervention as early as possible to attenuate or possibly prevent disease progression. Using a suite of smartphone-based measurements in an app called Psorcast (psoriasis forecasts), we aim to aggregate weekly, symptom measurements from participants in a remote, longitudinal observational study to map the trajectories of treatment response and disease progression. In this study, we will explore measurements of psoriatic disease activity at least an order of magnitude more frequently (weekly vs. quarterly) than standard clinical practice or clinical trial designs. This study is not meant to provide a medical diagnosis, treatment, or medical advice. It is meant to provide a scalable, inexpensive, non-invasive and frequent measure and tracking of psoriasis and psoriatic arthritis for research purposes.
Study design
- Observational model
- Cohort
- Time perspective
- Prospective
- Number of arms
- 3
| Arm | Type | Receives |
|---|---|---|
| Participants with Psoriasis | – | Behavioral: Participant self-assessment surveys, Behavioral: Psoriasis Draw, Behavioral: Psoriasis Area Photo, Behavioral: Finger and Toe Photos, Behavioral: Digital Jar Open, Behavioral: 30 Second Walk, Other: Psorcast mobile applicationPeople who report a diagnosis of Psoriasis. Participants are invited via the Psorcast mobile application to complete the following assessments: Participant self-assessment surveys, skin assessments (Psoriasis Area Draw and Psoriasis Area Photo) and musculoskeletal assessments (Finger/Toe Photos, Joint Count, Digital Jar Open, 30s Walk). |
| Participants with Psoriatic Arthritis | – | Behavioral: Participant self-assessment surveys, Behavioral: Psoriasis Draw, Behavioral: Psoriasis Area Photo, Behavioral: Finger and Toe Photos, Behavioral: Digital Jar Open, Behavioral: 30 Second Walk, Other: Psorcast mobile applicationPeople who report a diagnosis of Psoriatic Arthritis. Participants are invited via the Psorcast mobile application to complete the following assessments: Participant self-assessment surveys, skin assessments (Psoriasis Area Draw and Psoriasis Area Photo) and musculoskeletal assessments (Finger/Toe Photos, Joint Count, Digital Jar Open, 30s Walk). |
| Participants without Psoriasis or Psoriatic Arthritis | – | Behavioral: Participant self-assessment surveys, Behavioral: Psoriasis Draw, Behavioral: Psoriasis Area Photo, Behavioral: Finger and Toe Photos, Behavioral: Digital Jar Open, Behavioral: 30 Second Walk, Other: Psorcast mobile applicationPeople who report no prior diagnosis of Psoriasis or Psoriatic Arthritis. Participants are invited via the Psorcast mobile application to complete the following assessments: Participant self-assessment surveys, skin assessments (Psoriasis Area Draw and Psoriasis Area Photo) and musculoskeletal assessments (Finger/Toe Photos, Joint Count, Digital Jar Open, 30s Walk). |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
- Study population
- Adults with a compatible iPhone or iPod Touch who consent to particpate
Key inclusion criteria (3 listed)
- Adult age 18 and older who consent to participate in the study
- Own a compatible iPhone or iPod Touch device running iOS 12.2 or above
- Be able to read and understand an official language of the country of participation
Key exclusion criteria (4 listed)
- Age 17 years or younger
- Not a resident of the a country where the app is approved for use
- Not have a personal (i.e., not shared) iPhone (4s or newer running iOS 8.0 or later)
- Not be able to read and understand an official language of the country of participation
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 |
|---|---|---|
| Participant self-assessment surveysAt enrollment, participants are asked to complete a baseline health history, family history, and a participant-reported symptom inventory. | Behavioural | Participants with Psoriasis, Participants with Psoriatic Arthritis, Participants without Psoriasis or Psoriatic Arthritis |
| Psoriasis DrawParticipants are asked to draw the location and size of psoriasis they currently experience. Participants are provided a body template onto which they can draw on their screen. Investigators estimate the percentage of body area affected. | Behavioural | Participants with Psoriasis, Participants with Psoriatic Arthritis, Participants without Psoriasis or Psoriatic Arthritis |
| Psoriasis Area PhotoParticipants are asked to take a picture of a representative psoriasis plaque and indicate the location of the plaque. They are asked to take a picture of the same area over time. The investigators are developing computer vision algorithms to assess the plaque. | Behavioural | Participants with Psoriasis, Participants with Psoriatic Arthritis, Participants without Psoriasis or Psoriatic Arthritis |
| Finger and Toe PhotosParticipants are asked to take pictures of the back of each hand and the top of each foot. These photos can be used to assess finger and toe swelling as well as psoriatic nail involvement. The investigators are developing computer vision algorithms to assess psoriatic nail involvement and digit swelling. | Behavioural | Participants with Psoriasis, Participants with Psoriatic Arthritis, Participants without Psoriasis or Psoriatic Arthritis |
| Digital Jar OpenParticipants are asked to internally and externally rotate the phone as it rests on a flat surface. Participants perform each direction (internal and external) and each arm (left and right) in turn. Gyroscope sensors measure the degree of rotation. | Behavioural | Participants with Psoriasis, Participants with Psoriatic Arthritis, Participants without Psoriasis or Psoriatic Arthritis |
| 30 Second WalkParticipants are asked to walk in a straight line for 30 seconds. Gait is measured by gyroscope and accelerometer sensors. The investigators examine step-dependent and sequence-dependent features from these sensors. The investigators apply feature selection and classifier algorithms to analyze these data. | Behavioural | Participants with Psoriasis, Participants with Psoriatic Arthritis, Participants without Psoriasis or Psoriatic Arthritis |
| Psorcast mobile applicationParticipants complete all described behavioral interventions via a dedicated iPhone app, Psorcast. | Other | Participants with Psoriasis, Participants with Psoriatic Arthritis, Participants without Psoriasis or Psoriatic Arthritis |
Primary outcome
Results of participant self-assessment surveys
Time frame: Through study completion, an average of 2 years
Results of participant self-assessment surveys will be analyzed using descriptive statistics. These results may also be compared with other intervention results.
Body surface area and location from the Psoriasis Draw assessment
Time frame: Through study completion, an average of 2 years
The investigators will quantify body surface area and psoriasis area hotspots across the cohort. These results may also be compared with other intervention results.
Computer vision features from Psoriasis Area Photo assessment
Time frame: Through study completion, an average of 2 years
The investigators apply visual processing and classifier algorithms to analyze the images from the Psoriasis Area Photo assessments. These results may also be compared with other intervention results.
Computer vision features from Finger/Toe Photos
Time frame: Through study completion, an average of 2 years
The investigators apply visual processing and classifier algorithms to segment nails and joints from hand and foot photos. These results may also be compared with other intervention results.
Gyroscope and accelerometer sensor measurements from Digital Jar Open assessment
Time frame: Through study completion, an average of 2 years
The investigators examine rotational features from gyroscope and accelerometer sensors. The investigators apply feature selection and classifier algorithms to analyze these data. These results may also be compared with other intervention results.
Gyroscope and accelerometer sensor measurements from 30-sec Walk assessment
Time frame: Through study completion, an average of 2 years
The investigators examine step-dependent and sequence-dependent features from gyroscope and accelerometer sensors. The investigators apply feature selection and classifier algorithms to analyze these data. These results may also be compared with other intervention results.
Quantification and distribution of self-reported painful joints
Time frame: Through study completion, an average of 2 years
The investigators will quantify the self-reported painful joints and, in particular, compare to measurements from the 30-sec Walk and Digital Jar Open to identify correlations. These results may also be compared with other intervention results.
1 secondary outcome
App usage data for assessment of participant engagement
Time frame: Through study completion, an average of 2 years
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 1 Jun 2026.
- BackgroundDE Webster, RH Haberman, LM Perez Chada, M Tummalacherla, A Tediarjo, V Yadav, E Chaibub Neto, W MacDuffie, M DePhillips, E Sieg, S Catron, C Grant, W Francis, M Nguyen, M Yussuff, RL Castillo, D Yan, AL Neimann, SM Reddy, A Ogdie, A Kolivras, MR Kellen, LM Mangravite, SK Sieberts, L Omberg, JF Merola, JU Scher medRxiv 2022.04.13.22273676; doi: https://doi.org/10.1101/2022.04.13.22273676
- Psorcast Study WebsiteLink provided by the sponsor.
- Individual participant dataSharing planned: Yes. We will share the de-identified data from participants who opt-in to data sharing during enrollment and consent.
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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.
Solveig Sieberts, Ph.D principal investigator
Sage Bionetworks
Jose Scher, MD principal investigator
NYU Langone Medical Center
Joseph Merola, MD, MMSc principal investigator
Brigham and Women's Hospital & Harvard Medical School
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Psoriatic Arthritis and Psoriasis, run by Sage Bionetworks at 1 site 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 3 inclusion and 4 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: under way, not looking for participants, as of the sponsor's last update on 1 Jun 2026. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site 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.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
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?
Results of participant self-assessment surveys (time frame: Through study completion, an average of 2 years). The study lists 7 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 NCT05621369, 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 1 Jun 2026.