The Journal of dermatology
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Randomized Controlled Trial Multicenter Study
Efficacy and safety of brodalumab in the Korean population for the treatment of moderate to severe plaque psoriasis: A randomized, phase III, double-blind, placebo-controlled study.
Psoriasis, a chronic inflammatory skin disease, negatively impacts patients' quality of life (QoL). This randomized, phase III, double-blind, placebo-controlled, multicenter study evaluated the efficacy and safety of brodalumab, a human anti-interleukin-17 receptor A monoclonal antibody, in Korean patients with moderate to severe plaque psoriasis. Coprimary end-points were the percentage of patients with 75% or more improvement in Psoriasis Area and Severity Index (PASI 75) and static Physician's Global Assessment (sPGA) success (score 0/1) at week 12. ⋯ Brodalumab treatment rapidly improved DLQI scores. The most common treatment-emergent adverse events were nasopharyngitis, upper respiratory tract infections, tinea pedis, and urticaria. Overall, treatment with brodalumab 210 mg Q2W resulted in a rapid and significant clinical benefit and was well tolerated in patients with moderate to severe plaque psoriasis in Korea.
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Multicenter Study
Twenty-four-week interim analysis from a phase 3 open-label trial of adalimumab in Japanese patients with moderate to severe hidradenitis suppurativa.
Hidradenitis suppurativa (HS) is a chronic skin disease characterized by recurrent painful inflamed nodules/abscesses and draining fistulas that negatively impact quality of life. Adalimumab, a monoclonal antibody against tumor necrosis factor-α, has been approved in the EU, USA and Japan for the treatment of moderate to severe HS. This is an interim analysis of an ongoing phase 3, multicenter, open-label, single-arm study of the safety and efficacy of adalimumab weekly dosing in Japanese patients with moderate to severe HS. ⋯ At week 12, 86.7% of patients achieved clinical response, with improvements at week 12 across the primary and secondary end points generally sustained through week 24. Adalimumab weekly dosing was generally safe and well tolerated with no new safety findings through week 24. These results suggest that adalimumab is effective and well tolerated in Japanese patients with moderate to severe HS.
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Randomized Controlled Trial Multicenter Study
Efficacy and safety of secukinumab in Taiwanese patients with moderate to severe plaque psoriasis: Subanalysis from ERASURE phase III study.
The efficacy and safety of secukinumab, a fully human anti-interleukin-17A monoclonal antibody, has been evaluated for moderate to severe plaque psoriasis in global trials which have included a low proportion of Asian subjects. We analyzed the efficacy and safety of secukinumab in Taiwanese patients in a phase III global clinical trial (ERASURE). Fifty-one Taiwanese patients were randomized into s.c. placebo, 150 and 300 mg secukinumab treatment groups. ⋯ The most common AE (cases/per 100 patient-year) during the entire treatment period were upper respiratory tract infection and pruritus. The duration of upper respiratory tract infection per 100 patient-year was approximately 399 days in placebo, 1261 days in 150 mg secukinumab and 1805 days in 300 mg secukinumab. The safety and efficacy of secukinumab in Taiwanese patients was compatible with the global phase III study in the treatment of moderate to severe plaque psoriasis.
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Multicenter Study
Phase I study of pegylated interferon-alpha-2b as an adjuvant therapy in Japanese patients with malignant melanoma.
In the adjuvant setting for malignant melanoma, interferon (IFN)-α-2b and pegylated (PEG) IFN-α-2b were approved in several countries including the USA before these were approved in Japan. To resolve the "drug-lag" issue, this phase I study was designed to evaluate the safety and tolerability in Japanese patients with stage II or III malignant melanoma who had undergone surgery, by treating with PEG IFN-α-2b. As with a previously reported phase III study, patients were to receive PEG IFN-α-2b 6 μg/kg per week s.c. during an 8-week induction phase, followed by a maintenance phase at a dose of 3 μg/kg per week up to 5 years. ⋯ No neutralizing antibody was detected in these patient samples. PEG IFN-α-2b was tolerated in Japanese patients, and eventually approved in Japan in May 2015 for adjuvant therapy in patients with stage III malignant melanoma. Because the number of patients was limited, further investigation would be crucial.
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Multicenter Study Pragmatic Clinical Trial
Oral tofacitinib efficacy, safety and tolerability in Japanese patients with moderate to severe plaque psoriasis and psoriatic arthritis: A randomized, double-blind, phase 3 study.
Tofacitinib is an oral Janus kinase inhibitor that is being investigated for psoriasis and psoriatic arthritis. Japanese patients aged 20 years or more with moderate to severe plaque psoriasis and/or psoriatic arthritis were double-blindly randomized 1:1 to tofacitinib 5 or 10 mg b.i.d. for 16 weeks, open-label 10 mg b.i.d. for 4 weeks, then variable 5 or 10 mg b.i.d. to Week 52. Primary end-points at Week 16 were the proportion of patients achieving at least a 75% reduction in Psoriasis Area and Severity Index (PASI75) and Physician's Global Assessment of "clear" or "almost clear" (PGA response) for psoriasis, and 20% or more improvement in American College of Rheumatology criteria (ACR20) for patients with psoriatic arthritis. ⋯ Adverse events occurred in 83% of patients through Week 52, including four (4.3%) serious adverse events and three (3.2%) serious infections (all herpes zoster). No malignancies, cardiovascular events or deaths occurred. Tofacitinib (both doses) demonstrated efficacy in patients with moderate to severe plaque psoriasis and/or psoriatic arthritis through 52 weeks; safety findings were generally consistent with prior studies.