Clinical Features of Non-Classical 21-Hydroxylase Deficiency After Normal Newborn Mass Screening

    January 2023 in “ Pediatrics International
    Funa Takahashi, Shuhei Adachi, Nodoka Sakurai, Toshihiko Mori, Kaori Fujikura, Takeshi Usui, Tomonobu Hasegawa
    The document described a case of a Japanese girl diagnosed with non-classical 21-hydroxylase deficiency (NC-21OHD) after initially normal newborn mass screening. Despite the negative screening, she exhibited symptoms such as rapid growth, virilization, and elevated testosterone levels, leading to her diagnosis. Genetic analysis revealed compound heterozygosity for CYP21A2 variants. Treatment with hydrocortisone normalized testosterone levels and controlled clitoromegaly, although her overgrowth persisted. The study highlighted the challenges in diagnosing NC-21OHD, especially with negative newborn screenings, and emphasized the importance of considering this condition in cases of virilization or precocious puberty. The authors noted the need for further data accumulation and individualized treatment approaches due to phenotypic variability.
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