AUTHOR=Yan Shi , Sheng Yu , Hui Hai-zhen , Zhou Chun-yan , Liu De-ming TITLE=Rabson-Mendenhall syndrome presented as severe acanthosis nigricans in an infant harboring novel mutations in the INSR gene: a case report JOURNAL=Frontiers in Pediatrics VOLUME=Volume 13 - 2025 YEAR=2025 URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2025.1511429 DOI=10.3389/fped.2025.1511429 ISSN=2296-2360