18 and older, any sex, with Psoriasis or Plaque-type Psoriasis. Patients with the condition only — healthy volunteers not accepted.
Results — posted to ClinicalTrials.gov
Per-arm endpoint measurements with 95% confidence intervals where reported. Source: trial results section.
Core Study: Percentage of Participants Who Achieved a 75% Improvement (Response) in Psoriasis Area and Severity Index (PASI) at Week 16Primary· Week 0 and Week 16
PASI-75 response is the percentage of participants who achieved at least a 75% reduction (improvement) from baseline in PASI score at Week 16. The improvement in PASI score was used as a measure of efficacy. The PASI was a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling are scored on a scale of 0 (none) to 4 (very severe) o
Group
Value
95% CI
Placebo BID
5.7
Apremilast 10mg BID
11.2
Apremilast 20mg BID
28.7
Apremilast 30 mg BID
40.9
Core Study: Percentage of Participants Who Achieved a 75% Improvement (Response) in PASI Score at Week 24Secondary· Week 0 to Week 24
PASI-75 response is the percentage of participants who achieved at least a 75% reduction (improvement) from baseline in PASI score at Week 24. The improvement in PASI score was used as a measure of efficacy.The PASI was a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling are scored on a scale of 0 (none) to 4 (very severe) on
Group
Value
95% CI
Apremilast 10mg BID
18.0
10.6 – 27.5
Apremilast 20mg BID
26.4
17.6 – 37.0
Apremilast 30 mg BID
39.8
29.5 – 50.8
PBO-Apremilast 20mg BID
41.2
24.6 – 59.3
PBO-Apremilast 30 mg BID
44.4
27.9 – 61.9
Core Study: Percentage of Participants Who Achieved a 50% Improvement (Response) in PASI Score at Week 16Secondary· Week 0 to Week 16
PASI-50 response is the percentage of participants who achieved at least a 50% reduction (improvement) from baseline in PASI score at Week 16. The improvement in PASI score was used as a measure of efficacy The PASI score was a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling are scored on a scale of 0 (none) to 4 (very sev
Group
Value
95% CI
Placebo BID
25.0
Apremilast 10mg BID
38.2
Apremilast 20mg BID
47.1
Apremilast 30 mg BID
60.2
Core Study: Percentage of Participants Who Achieved a 50% Improvement (Response) in the PASI Score at Week 24Secondary· Week 0 to Week 24
PASI-50 response is the percentage of participants who achieved at least a 50% reduction (improvement) from baseline in PASI score at Week 24. The improvement in PASI score was used as a measure of efficacy. The PASI score was a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling are scored on a scale of 0 (none) to 4 (very se
Group
Value
95% CI
Apremilast 10mg BID
38.2
28.1 – 49.1
Apremilast 20mg
49.4
38.5 – 60.4
Apremilast 30 mg BID
65.9
55.0 – 75.7
Placebo-Apremilast 20mg BID
61.8
43.6 – 77.8
PBO-Apremilast 30 mg BID
75.0
57.8 – 87.9
Core Study: Percentage of Participants Who Achieved a 90% Improvement (Response) From Baseline in the PASI Score at Week 16Secondary· Week 0 to Week 16
PASI-90 response is the percentage of participants who achieved at least a 90% reduction (improvement) from baseline in PASI score at Week 16. The improvement in PASI score was used as a measure of efficacy. The PASI score was a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling are scored on a scale of 0 (none) to 4 (very se
Group
Value
95% CI
Placebo BID
1.1
Apremilast 10mg BID
4.5
Apremilast 20mg BID
9.2
Apremilast 30 mg BID
11.4
Core Study: Percentage of Participants Who Achieved a 90% Improvement (Response) in the PASI Score at Week 24Secondary· Week 0 to Week 24
PASI-90 response is the percentage of participants who achieved at least a 90% reduction (improvement) from baseline in PASI score at Week 24. The improvement in PASI score was used as a measure of efficacy..The PASI is a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling were scored on a scale of 0 (none) to 4 (very severe)
Group
Value
95% CI
Apremilast 10mg
4.5
1.2 – 11.1
Apremilast 20mg
8.0
3.3 – 15.9
Apremilast 30 mg
14.8
8.1 – 23.9
PBO-Apremilast 20mg BID
14.7
5.0 – 31.1
Placebo-Apremilast 30 mg BID
16.7
6.4 – 32.8
Core Study: Percent Change From Baseline in PASI Score at Week 16Secondary· Week 0 to Week 16
The PASI was a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling were scored on a scale of 0 (none) to 4 (very severe) on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions was scored on a scale of 0 (no involvement) to 6 (90% to 100% involvement
Group
Value
95% CI
Placebo BID
-20.3
± 3.98
Apremilast 10mg BID
-34.0
± 4.00
Apremilast 20mg BID
-45.4
± 4.12
Apremilast 30 mg BID
-53.2
± 4.00
Core Study: Percent Change From Baseline in PASI Score at Week 24Secondary· Week 0 to Week 24
The PASI is a measure of psoriatic disease severity taking into account qualitative lesion characteristics (erythema, thickness, and scaling) and degree of skin surface area involvement on defined anatomical regions. PASI scores range from 0 to 72, with higher scores reflecting greater disease severity. Erythema, thickness, and scaling were scored on a scale of 0 (none) to 4 (very severe) on 4 anatomic regions of the body: head, trunk, upper limbs, and lower limbs. Degree of involvement on each of the 4 anatomic regions was scored on a scale of 0 (no involvement) to 6 (90% to 100% involvement)
Group
Value
95% CI
Apremilast 10mg BID
-36.3
± 36.03
Apremilast 20mg BID
-46.5
± 36.08
Apremilast 30 mg BID
-56.8
± 34.99
PBO-Apremilast 20mg BID
-61.7
± 25.35
PBO-Apremilast 30 mg BID
-61.7
± 32.67
Core Study: Percentage of Participants With a Static Physician Global Assessment (sPGA) Greater Than 2 at Baseline Who Achieved a Score of 0 or 1 at Week 16Secondary· Week 0 to Week 16
The sPGA was a measure of psoriasis disease severity at the time of evaluation by the investigator. It does not compare assessments across visits or rely on investigator recall of prior disease severity. The sPGA was a 6-point scale ranging from 0 (clear, except for residual discoloration) to 5 (severe; majority of plaques have severe thickness, erythema, and scaling). The investigator examined all of the lesions on the participant and assigned a score ranging from 0 to 5 for thickness, erythema and degree of scaling . Scores for thickness, erythema and scaling are then summed and the mean of
Group
Value
95% CI
Placebo
12.6
Apremilast 10mg
10.5
Apremilast 20mg
25.0
Apremilast 30 mg
33.7
Core Study: Percentage of Participants Who Achieved a Static Physician Global Assessment (sPGA) Score of 0 or 1 at Week 24Secondary· Week 0 and Week 24
The sPGA was a measure of psoriasis disease severity at the time of evaluation by the investigator. It does not compare assessments across visits or rely on investigator recall of prior disease severity. The sPGA was a 6-point scale ranging from 0 (clear, except for residual discoloration) to 5 (severe; majority of plaques have severe thickness, erythema, and scaling). The investigator examined all of the lesions on the participant and assigned a score ranging from 0 to 5 for thickness, erythema and degree of scaling . Scores for thickness, erythema and scaling are then summed and the mean of
Group
Value
95% CI
Apremilast 10mg BID
13.5
7.2 – 22.4
Apremilast 20mg BID
24.1
15.6 – 34.5
Apremilast 30 mg BID
34.1
24.3 – 45.0
Placebo-Apremilast 20 mg BID
41.2
24.6 – 59.3
Placebo-Apremilast 30 mg BID
50.0
32.9 – 67.1
Core Study: Percent Change From Baseline in the Percent of Affected Body Surface Area (BSA) During the Placebo Controlled PhaseSecondary· Week 0 to Week 16
The overall BSA affected by psoriasis was estimated by comparison of the size of the affected area to the palm area of the participant's hand (entire palmar surface or "handprint"), which equates to approximately 1% of total BSA.
Group
Value
95% CI
Placebo BID
-8.0
± 4.58
Apremilast 10mg BID
-28.3
± 4.60
Apremilast 20mg BID
-38.0
± 4.74
Apremilast 30 mg BID
-50.4
± 4.63
Core Study: Percent Change From Baseline in the Percent of Affected Body Surface Area (BSA) During the Active Treatment Phase at Week 24Secondary· Week 0 to Week 24
The overall BSA affected by psoriasis was estimated by comparison of the size of the affected area to the palm area of the participant's hand (entire palmar surface or "handprint"), which equates to approximately 1% of total BSA.
Group
Value
95% CI
Apremilast 10mg BID
-28.1
± 46.78
Apremilast 20mg BID
-40.6
± 43.71
Apremilast 30 mg BID
-54.0
± 37.32
Placebo-Apremilast 20 mg BID
-52.5
± 37.35
Placebo-Apremilast 30 mg BID
-54.2
± 42.08
Adverse events — posted to ClinicalTrials.gov
Time frame: Adverse Events are reported for the 16-week placebo-controlled phase and up to the LTE period, (6 years) for all participants who were randomized or re-randomized to apremilast at any time during the core, the extension or the long term extension study..
Reporting threshold: 5%.
Adverse-event reports describe events observed during the trial — not all are caused by the drug.
Placebo (Weeks 0-16)
Serious: 2/88 (2%)
Deaths: —
Apremilast 10mg BID (Weeks 0-16)
Serious: 0/89 (0%)
Deaths: —
Apremilast 20mg BID (Weeks 0-16)
Serious: 3/87 (3%)
Deaths: —
Apremilast 30mg BID (Weeks 0-16)
Serious: 4/88 (5%)
Deaths: —
Apremilast 10mg BID (APR Exposure Period) Years 0-6
Serious: 2/89 (2%)
Deaths: —
Apremilast 20mg BID (APR Exposure Period) Years 0-6
Serious: 9/121 (7%)
Deaths: —
Apremilast 30mg BID (APR Exposure Period) Years 0-6
Serious: 9/124 (7%)
Deaths: —
Serious adverse events (27 terms)
Reaction
System
Placebo (Weeks 0-16)
Apremilast 10mg BID (Weeks…
Apremilast 20mg BID (Weeks…
Apremilast 30mg BID (Weeks…
Apremilast 10mg BID (APR E…
Apremilast 20mg BID (APR E…
Apremilast 30mg BID (APR E…
Prostate cancer
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
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Pregnancy
Pregnancy, puerperium and perinatal conditions
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Angina pectoris
Cardiac disorders
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Myocardial infarction
Cardiac disorders
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Pancreatitis
Gastrointestinal disorders
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Oedema peripheral
General disorders
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Sudden death
General disorders
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Bronchitis
Infections and infestations
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Cellulitis
Infections and infestations
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Pneumonia
Infections and infestations
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Ankle fracture
Injury, poisoning and procedural complications
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Meniscus lesion
Injury, poisoning and procedural complications
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Tibia fracture
Injury, poisoning and procedural complications
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Compartment syndrome
Musculoskeletal and connective tissue disorders
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Muscle haemorrhage
Musculoskeletal and connective tissue disorders
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Musculoskeletal chest pain
Musculoskeletal and connective tissue disorders
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Squamous cell carcinoma of skin
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
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Publications: Europe PMC API search by NCT ID, retrieved 10 June 2026
Drug + disease cross-links: matched in real time against Drug Landscape's normalised drug + company + condition tables
Sponsor: as reported to ClinicalTrials.gov by Amgen
Last refreshed: 7 May 2020
Drug Landscape aggregates and links these public records for informational use only. Always verify against the primary source before clinical or regulatory decisions. Canonical URL: https://druglandscape.com/trial/NCT00773734.