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ACT-128800

Phase 2

Plaque Psoriasis | Small molecule | Dermatology |Johnson & Johnson|Last Updated: Mar 30, 2025

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials1
Total Enrollment66

FDA Designations

No designations recorded

Clinical trial landscape

ACT-128800 · 5 trials · 5 indications

Phase 2 2Phase 1 3
NCT01208090ACT-128800 in Patients With Moderate to Severe Chronic Plaque PsoriasisPsoriasis
COMPLETED326 Analytics
NCT00852670ACT-128800 in PsoriasisPlaque Psoriasis
COMPLETED66 Analytics
PHASE2COMPLETED
ACT-128800 in Patients With Moderate to Severe Chronic Plaque Psoriasis
PsoriasisUnlock trial analytics
PHASE2COMPLETED
ACT-128800 in Psoriasis
Plaque PsoriasisUnlock trial analytics

Study Endpoints

Primary Endpoints

Proportion of patients with at least 75% improvement in PASI from baseline (PASI75) at Week 16.
Baseline to week 16
Psoriasis Area and Severity Index (PASI) percent change relative to baseline at Week 6 visit.
Baseline to week 6
Change from baseline to Day 18 in systolic blood pressure
18 days

Blood pressure was measured using an automatic oscillometric device, always on the leading arm (i.e., leading arm right = writing with right hand). Measurements were recorded from the subject in the supine position after having rested for a 5-minute period.

Change from baseline to Day 18 in diastolic blood pressure
18 days

Blood pressure was measured using an automatic oscillometric device, always on the leading arm (i.e., leading arm right = writing with right hand). Measurements were recorded from the subject in the supine position after having rested for a 5-minute period.

Change from baseline to Day 18 in pulse rate
18 days

Pulse rate was measured using an automatic oscillometric device, always on the leading arm (i.e., leading arm right = writing with right hand). Measurements were recorded from the subject in the supine position after having rested for a 5-minute period.

Change from baseline to Day 18 in body temperature
18 days

Body temperature was measured in the supine position using the same thermometer throughout the study.

Cumulative recovery of total radioactivity expressed as a percentage of the administered dose (mass balance) in the urine
Up to end of study, approximately 240 hours

On Day 1, immediately prior to the intake of study drug, subjects were instructed to empty their bladders. Thereafter, following drug intake all urine produced was collected for 10 days up to Day 11 (morning). Following administration of 14C-ACT-128800, urine samples were collected in three consecutive 8-hour intervals, from 0-8 h, 8-16 h, and 16-24 h. From Day 2 to Day 10 (inclusive), urine samples were collected at 24-hour intervals. In case of an extended observation period, urine samples were also collected at 24-hour intervals. The total amount of radioactivity was measured using a liquid scintillation counter.

Cumulative recovery of total radioactivity expressed as a percentage of the administered dose (mass balance) in the faeces
Up to end of study, approximately 240 hours

Between Day -3 and Day -1, a baseline faeces sample was collected in a light-protected polypropylene box from each subject. From Day 1 (post-dose) to Day 10 (inclusive), all faeces samples and the toilet paper were collected in pre-weighed, light-protected polypropylene boxes. Each faeces sample was collected in a separate box and weighed. The weight of the sample and the time of collection were recorded. All faecal samples were frozen as soon as possible and stored in an upright position at -70 °C or below.The total amount of radioactivity was measured using a liquid scintillation counter.

Change in systolic blood pressure from baseline up to end of study
Up to 10 days

Blood pressure shall be measured using an automatic oscillometric device, always on the leading (writing) arm. Measurements shall be taken in the supine position after having rested for at least a 5 min period.

Change in diastolic blood pressure from baseline up to end of study
Up to 10 days

Blood pressure shall be measured using an automatic oscillometric device, always on the leading (writing) arm. Measurements shall be taken in the supine position after having rested for at least a 5 min period.

Change in pulse rate from baseline up to end of study
Up to 10 days

Pulse rate shall be measured using an automatic oscillometric device, always on the leading (writing) arm. Measurements shall be taken in the supine position after having rested for at least a 5 min period.

Change in body temperature from baseline up to end of study
Up to 10 days

Body temperature shall be measured in a supine position using the same thermometer throughout the study.

Change in forced expiratory volume in 1 second (FEV1) from baseline up to end of study
Up to 10 days

FEV1 assessments shall be performed in a standardized manner as per the American Thoracic Society standards. Three good test breaths will be measured; the highest FEV1 value from these three breath tests will be recorded.

Change in forced vital capacity (FVC) from baseline up to end of study
Up to 10 days

FVC assessments shall be performed in a standardized manner as per the American Thoracic Society standards. Three good test breaths will be measured; the highest FVC value from these three breath tests will be recorded.

Number of treatment-emergent abnormalities on physical examination up to end of study
Up to 10 days

Physical examination (i.e., inspection, percussion, palpation, and auscultation) shall be performed during the course of the study.

Change in heart rate from baseline up to end of study
Up to 10 days

Heart rate shall be measured using standard 12-lead electrocardiogram recorded at rest with the subject in the supine position for a 5-minute period.

Change in QT interval (time interval from beginning of the Q wave until end of the T wave) calculated according to Bazett's correction (QTcB) from baseline up to end of study
Up to 10 days

QTcB shall be determined using standard 12-lead electrocardiogram recorded at rest with the subject in the supine position for a 5-minute period. The QTcB interval is the QT interval corrected for heart rate with Bazett's formula (QTcB = QT/RR\^0.5 where RR is 60/heart rate).

Change in QT interval (time interval from beginning of the Q wave until end of the T wave) calculated according to Fridericia's correction (QTcF) from baseline up to end of study
Up to 10 days

QTcF shall be determined using standard 12-lead electrocardiogram recorded at rest with the subject in the supine position for a 5-minute period. The QTcF interval is the QT interval corrected for heart rate with Fridericia's formula (QTcF = QT/RR\^0.33 where RR is 60/heart rate).

Number of treatment-emergent electrocardiogram abnormalities up to end of study
Up to 10 days

Electrocardiogram abnormalities shall be determined using standard 12-lead electrocardiogram recorded at rest with the subject in the supine position for a 5-minute period.

Secondary Endpoints

Proportion of patients with "Clear" or "Almost clear" on PGA at Week 16.
Baseline to week 16
"Clear - almost clear" Physician Global Assessment (PGA) at Week 6 visit.
Week 6
Change from baseline to Day 10 in mean absolute lymphocyte count
10 days
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
Investigational drug - Dose 1EXPERIMENTAL -
Investigational drug - Dose 2EXPERIMENTAL -
Matching placeboPLACEBO_COMPARATOR -
AEXPERIMENTAL -
BPLACEBO_COMPARATOR -
ACT-128800EXPERIMENTALACT-128800 tablets, once daily for 3 days at each dose level: 10 mg, 20 mg, 40 mg, 60 mg, 80 mg, and 100 mg.
PlaceboPLACEBO_COMPARATORMatching placebo tablets, once daily, for 18 days

Interventions

NameTypeDescription
ACT-128800DRUGACT-128800 (Dose 1 or Dose 2) or matching placebo administered orally once daily
PlaceboDRUGACT-128800 (Dose 1 or Dose 2) or matching placebo administered orally once daily
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Eligibility Criteria

Age Range18 Years to 60 Years
SexALL
Healthy VolunteersNo
Study Sites67

Inclusion Criteria: * Adult males and females aged 18 to 60 years (inclusive) with moderate to severe chronic plaque psoriasis who require systemic treatment. Exclusion Criteria: * Patients with other forms of psoriasis and patients who are currently treated for autoimmune disorders other than ps...

Countries:AustriaBelgiumBulgariaCzechiaDenmarkFranceHungaryItalyLithuaniaRomaniaRussiaSlovakiaSpainSwedenSwitzerlandUkraineUnited KingdomGermanySerbiaUnited States
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Frequently asked questions about ACT-128800

What is ACT-128800 used for?

ACT-128800 is an investigational small molecule being studied for plaque psoriasis, as well as for safety, tolerability, and pharmacokinetics in healthy subjects. It is not approved and remains in clinical development.

Who makes ACT-128800?

ACT-128800 is being developed by Johnson & Johnson (NYSE: JNJ). The company has sponsored clinical trials of the drug in plaque psoriasis and healthy volunteer studies.

What phase is ACT-128800 in?

ACT-128800 has completed Phase 1 and Phase 2 trials. The most advanced completed trial was a Phase 2 study in plaque psoriasis. The drug is investigational and not FDA approved.

What clinical trials is ACT-128800 in?

ACT-128800 has completed four trials: NCT00852670 (Phase 2 in plaque psoriasis), NCT02029482 (Phase 1 in healthy subjects), NCT02126956 (Phase 1 mass balance study), and NCT02223832 (Phase 1 in Japanese and Caucasian subjects). All are completed.

Is ACT-128800 the same as any other drug?

No alternative names for ACT-128800 have been reported. It is identified solely by its code name ACT-128800 in clinical trial registries and development records.