A rare cause of delayed puberty in two cases with 46,XX and 46,XY karyotype: 17 α-hydroxylase deficiency due to a novel variant in CYP17A1 gene

Unal E., Yıldırım R., Taş F. F., Tekin S., CEYLANER S., Haspolat Y. K.

Gynecological Endocrinology, cilt.36, sa.8, ss.739-742, 2020 (SCI-Expanded) identifier identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 36 Sayı: 8
  • Basım Tarihi: 2020
  • Doi Numarası: 10.1080/09513590.2019.1707798
  • Dergi Adı: Gynecological Endocrinology
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, EMBASE, MEDLINE
  • Sayfa Sayıları: ss.739-742
  • Anahtar Kelimeler: 17 alpha-hydroxylase, delayed puberty, hypertension, primary amenorrhea, 17-ALPHA-HYDROXYLASE, 17,20-LYASE, MUTATION, FAMILY
  • Lokman Hekim Üniversitesi Adresli: Hayır

Özet

© 2019 Informa UK Limited, trading as Taylor & Francis Group.Aims: 17α-hydroxylase deficiency is a rare form of congenital adrenal hyperplasia (CAH) which is inherited autosomal recessive. It occurs result of a mutations in gene cytochrome (CYP)17A1, which encodes both 17α-hydroxylase and 17,20-lyase enzymes. The main clinical findings of the disease are delayed puberty, primary amenorrhea in females, and disorders of sex development (DSD) in males. Also, hypertension and hypokalemia can be seen in both sexes. In this paper, we describe the clinical and genetic changes of two patients with 46,XY and 46,XX karyotypes from two different families who were diagnosed with complete 17α-hydroxylase enzyme deficiency. Methods: In this study various methods including clinical, hormonal, radiological and genetic analyzes were used. Blood samples were obtained for genetic tests. Genomic DNA was extracted from peripheral blood leukocytes, and coding sequence abnormalities of the CYP17 gene were assessed by polymerase chain reaction and direct sequencing analysis. Results: 17α-hydroxylase deficiency was diagnosed in 2 patients with 46,XX and 46,XY karyotype who presented with hypertension and delayed puberty. The pQ80 * (c.238C > T) mutation detected in both cases was evaluated as a novel variant.