September 2023 in “Journal of the American Academy of Dermatology” In this study of pediatric melanocytic lesions, researchers at Massachusetts General Hospital observed no concurrent BAP1 loss and BRAFV600E positivity, characteristics of adult BIMT, suggesting that these tumors may develop at a later age rather than in childhood.
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May 2020 in “Trends in molecular medicine” This study explored the immune environment of the hair follicle's bulge region and suggested that its unique signaling may prevent melanoma formation by lacking necessary proinflammatory signals for full oncogenic transformation, indicating potential strategies for melanoma prevention by replicating this immune-privileged environment.
This study found that the survival and proliferation of mouse melanocytes expressing the GNAQQ209L oncogene were impaired by interactions with the epidermal microenvironment, suggesting a possible mechanism for the rarity of these mutations in epidermal melanomas.
This study observed that nevus melanocytes do not exhibit signs of senescence, suggesting that their growth arrest is due to cell interactions and not directly caused by BRAF activation.
October 2023 in “Pediatric blood & cancer” This report discusses a potentially underdiagnosed form of multisystem Langerhans cell histiocytosis in infants, demonstrating the use of thymic sonography for staging, highlighting a case where thymic and cutaneous involvement was confirmed, and suggesting thymic ultrasound may aid in better diagnosis and management of LCH.