Research Article

A Phase IIIb, Multicentre, Interventional, Randomised, Placebo-Controlled Clinical Trial Investigating the Efficacy and Safety of Guselkumab for the Treatment of Nonpustular Palmoplantar Psoriasis (G-PLUS)

Table 3

Primary and other clinical and quality-of-life efficacy endpoints by visit through week 48 using multiple imputation and including nonresponse of discontinuations (full analysis set).

Double-blind phase (week 16)Open-label phase (week 24)Open-label phase (week 48)
PlaceboGuselkumab 100 mg q8wPlacebo-crossoverGuselkumab 100 mg q8wPlacebo-crossoverGuselkumab 100 mg q8w

ppPASI response
 ppPASI75, n/N (%)11/39 (28.2)28/78 (35.9)19/39 (48.7)40/78 (51.3)25/39 (64.1)43/78 (55.1)
  95% CI15.55, 45.1025.57, 47.6232.71, 64.9739.78, 62.6647.15, 78.3243.49, 66.26
 ppPASI90, n/N (%)6/39 (15.4)19/78 (24.4)8/39 (20.5)28/78 (35.9)16/39 (41.0)30/78 (38.5)
  95% CI6.41, 31.2115.65, 35.639.87, 36.9425.57, 47.6225.98, 57.8127.87, 50.20
 ppPASI100, n/N (%)2/39 (5.1)11/78 (14.1)5/39 (12.8)20/78 (25.6)8/39 (20.5)21/78 (26.9)
  95% CI0.89, 18.637.59, 24.264.82, 28.2316.72, 37.009.87, 36.9417.79, 38.36
ppIGA 0/1 response and ≥2-point reduction from baseline in ppIGA score, n/N (%)6/39 (15.4)27/78 (34.6)9/39 (23.1)28/78 (35.9)19/39 (48.7)33/78 (42.3)
  95% CI6.41, 31.2124.44, 46.3211.71, 39.7225.57, 47.6232.71, 64.9731.37, 54.01
PASI response
 PASI75, n/N (%)10/39 (25.6)23/78 (29.5)15/39 (38.5)35/78 (44.9)22/39 (56.4)42/78 (53.8)
  95% CI13.60, 42.4319.97, 41.0423.81, 55.3533.74, 56.5139.77, 71.8142.24, 65.07
 PASI90, n/N (%)2/39 (5.1)11/78 (14.1)4/39 (10.3)24/78 (30.8)12/39 (30.8)27/78 (34.6)
  95% CI0.89, 18.637.59, 24.263.34, 25.1621.08, 42.3817.55, 47.7324.44, 46.32
 PASI100, n/N (%)1/39 (2.6)7/78 (9.0)3/39 (7.7)16/78 (20.5)6/39 (15.4)15/78 (19.2)
  95% CI0.13, 15.083.99, 18.172.01, 21.9712.53, 31.466.41, 31.2111.51, 30.05
DLQI 0/1 score, n/N (%)3/39 (7.7)14/73 (19.2)9/39 (23.1)16/73 (21.9)15/39 (38.5)25/73 (34.2)
  95% CI2.01, 21.9711.25, 30.4211.71, 39.7213.41, 33.4223.81, 55.3523.79, 46.37

95% CIs are based on Wilson with continuity correction. ppPASI75/90/100 response is defined as ≥75/90/100% improvement in the ppPASI score from the baseline. ppIGA response is defined as a ppIGA score of 0 (cleared) or 1 (almost clear/minimal) AND ≥ 2-grade reduction from the baseline in the IGA score. PASI75/90/100 response is defined as ≥75/90/100% improvement in PASI score from baseline. In the calculation of the ppPASI, the pustules score is considered 0 and the index has a maximum score of 48. CI, confidence interval; DLQI, Dermatology Life Quality Index; PASI, Psoriasis Area and Severity Index; ppIGA, palmoplantar Investigator’s Global Assessment; ppPASI, palmoplantar PASI; q8w, every 8 weeks.