Publications by authors named "Takeo Maekawa"

"Wound, Pressure Ulcer, and Burn Guidelines-5: Guidelines for the management of lower leg ulcers and varicose veins, second edition" is revised from the first edition, which was published in the Japanese Journal of Dermatology in 2011. The guidelines were drafted by the Wound, Pressure Ulcer, and Burn Guidelines Drafting Committee delegated by the Japanese Dermatological Association and intend to facilitate physicians' clinical decisions in preventing, diagnosing and management of lower leg ulcers and varicose veins. We updated all sections by collecting documents published since the publication of the first edition.

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  • This study investigates the long-term effects of adjuvant therapy on different melanoma subtypes, particularly focusing on acral and mucosal types, using anti-PD-1 antibody and a combination of BRAF and MEK inhibitors.
  • A total of 120 patients were analyzed, revealing a median time to relapse of 18.4 months, with acral and mucosal types having 3-year recurrence-free survival rates of 28.1% and 38.5%, respectively.
  • Results indicate that adjuvant therapy is more effective for non-acral cutaneous melanoma compared to acral and mucosal types, especially regarding time to relapse.
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  • Treatment options for extramammary Paget's disease (EMPD) vary based on disease stage, with distinct survival rates observed among different stages.
  • A study of 643 EMPD cases in Japan revealed that curative surgery was the most common treatment for early stages, while chemotherapy was primarily used for more advanced stages.
  • Female sex was linked to a higher risk of local relapse in early stages, while initial curative surgery significantly improved survival rates in mid to advanced stages, indicating a need for further research.*
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  • Cutaneous angiosarcoma (CAS) is a highly aggressive vascular tumor, and while paclitaxel (PTX) is the first-line treatment, options for taxane-resistant cases are unclear.
  • This clinical trial will evaluate the effectiveness and safety of combining PTX with TM5614, a PAI-1 inhibitor, specifically for patients resistant to PTX therapy.
  • The study aims to measure overall response rates and other outcomes over 28 weeks, involving at least 15 patients to ensure valid results while addressing the lack of effective treatments for PTX-resistant CAS patients.
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  • The study focused on the effectiveness of salvage therapies in Japanese patients with advanced acral melanoma (AM) after they failed PD-1 monotherapy, a common treatment for melanoma.
  • 108 patients were analyzed, receiving various treatments such as ipilimumab, nivolumab plus ipilimumab, or cytotoxic chemotherapy, with varying objective response rates (ORR) and overall survival (OS) outcomes.
  • Results indicated that while the combination of nivolumab and ipilimumab showed the longest median OS, it was not significantly more effective than other treatments, and nail apparatus melanoma patients had poorer survival outcomes compared to those with palm and sole melanoma.
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  • Anti-PD-1 immunotherapy is less effective for Asian patients with advanced BRAF V600-mutant melanoma, leading researchers to consider alternative first-line treatments.
  • A study analyzed treatment outcomes for 336 Asian patients using BRAF/MEK inhibitors, anti-PD-1, and PD-1/CTLA-4 combinations, revealing BRAF/MEKi had the best objective response rates and progression-free survival.
  • The results suggested that BRAF/MEKi may be preferred over anti-PD-1 treatments for these patients, particularly in second-line settings, highlighting the need for tailored treatment approaches based on patient demographics.
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Since anti-PD-1 Abs can cause irreversible immune-related adverse events (irAEs), the associations between their efficacies and the incidence of irAEs are important to evaluate the use of anti-PD-1Abs for the treatment of melanoma, especially in the adjuvant setting. The purpose of this post hoc analysis study was to retrospectively analyze the associations between recurrence-free survival (RFS) at 12 months and the onset of any irAEs in 31 non-acral cutaneous and 30 acral melanoma cases treated with anti-PD-1 Abs therapy at the adjuvant setting in Asians. There were 20 cases with greater than grade 1 AEs in both the acral and non-acral cutaneous groups.

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  • Subcorneal pustular dermatosis is a rare, benign skin condition classified as a neutrophilic dermatosis, with three reported cases highlighting different patient responses and treatments.
  • In the cases, a 9-year-old girl experienced a rash post-mycoplasma infection, a 70-year-old woman had pustules after a flu vaccination while on rheumatoid arthritis medication, and an 81-year-old man dealt with pustules related to pyoderma gangrenosum and a skin infection.
  • Immunohistochemical analysis of the cases showed neutrophilic infiltration in the skin layers and an involvement of various inflammatory cells, indicating an active immune response contributing to the disease.
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Background: Efficacy of anti-PD-1 antibody monotherapy (PD1) or anti-PD-1 plus anti-CTLA-4 combination therapy (PD1 +CTLA4) for melanoma is affected by its clinical subtype. The amount of tumor mutation burden (TMB) caused by cumulative sun damage (CSD) is occasionally used to explain this; however, their relationship in Japanese nonacral cutaneous melanoma (NACM) is still unclear.

Objective: To analyze the ICI efficacy and its relationship with CSD of the primary lesion in Japanese patients with NACM.

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Cutaneous angiosarcoma (CAS) is a rare and highly aggressive type of vascular tumor. Although chemoradiotherapy with taxanes is recognized as a first-line therapy for CAS, second-line therapy for CAS remains controversial. From the above findings, the efficacy and safety profiles of taxane-switch (change paclitaxel to docetaxel or vise), eribulin methylate, and pazopanib regimens in second-line chemotherapy were evaluated retrospectively in 50 Japanese taxane-resistant CAS patients.

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Cutaneous angiosarcoma (CAS) is rare and most previous studies of CAS have been small case series, and randomized, phase II studies of CAS are limited. Since treatment options for CAS are controversial, and because only paclitaxel should be recommended based on high-level evidence, it is important to evaluate the efficacy of another taxane-derived agents, docetaxel, in real-world practice. The efficacy and safety profiles of chemoradiotherapy using taxane-based agents, docetaxel and paclitaxel, were retrospectively examined in the maintenance setting in 90 Japanese CAS patients, including 35 docetaxel-treated cases and 55 paclitaxel-treated cases.

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Background: Although anti-PD-1 antibody monotherapy (PD-1) is commonly used to treat advanced acral melanoma (AM), its efficacy is limited. Further, data on the efficacy of PD-1 plus anti-CTLA-4 antibody (PD-1+CTLA-4) for the treatment of AM are limited. Therefore, we compared the efficacy of PD-1+CTLA-4 and PD-1 in the treatment of Japanese patients with advanced AM.

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Plasminogen activating inhibitor-1 (PAI-1) is associated with poor clinical outcomes, and elevated levels of PAI-1 in both tissue and serum are correlated with poor response to therapy in various cancers, including skin cancer. Cutaneous angiosarcoma (CAS) is a vascular tumor histologically characterized by detachment of endothelial cell-derived tumor cells. Since CAS expresses multiple angiogenic growth factors and has increased expressions of angiogenic receptor tyrosine kinase transcripts including VEGFR1/2/3, angiogenesis-promoting factors are potential drug targets in CAS.

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Anti-PD-1 antibodies (Abs) are among the optimal adjuvant therapies for melanoma at high risk of recurrence, especially BRAF wild-type melanoma, but the anti-tumour effects of anti-PD-1 Abs in the adjuvant setting for acral melanoma have not been evaluated previously. The aim of this study was to analyse the efficacy and safety profiles of anti-PD-1 Ab monotherapy in the adjuvant setting in an Asian population including a high ratio of acral melanoma. The efficacy and safety profiles of anti-PD-1 Ab monotherapy in the adjuvant setting were retrospectively analysed in 78 Japanese patients with advanced melanoma, including 31 cases (40%) of acral melanoma.

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