hrp0097p1-544 | Pituitary, Neuroendocrinology and Puberty | ESPE2023

Clinical and laboratory characteristics of arginine vasopressin resistance and high carrier frequency of a novel homozygous variant p.R113C in the AQP2 gene among Buryats

Makretskaya Nina , Nanzanova Ulyana , Hamaganova Irina , Eremina Elena , Filatova Alexandra , Skoblov Mikhail , Tiulpakov Anatoly

Background: Congenital nephrogenic diabetes insipidus (arginine vasopressin resistance) is a rare inherited disorder characterized by insensitivity of the kidney to the antidiuretic effect of vasopressin. About 90% cases nephrogenic diabetes insipidus is an X-linked recessive disorder caused by variants in the AVP V2 receptor gene (AVPR2). In the remaining cases (10%) the disease is autosomal recessive or dominant and, for these patients, variants in ...

hrp0097p1-577 | Sex Differentiation, Gonads and Gynaecology, and Sex Endocrinology | ESPE2023

High carrier frequency of a splicing c.589G>A variant in the SRD5A2 gene among Buryats

Makretskaya Nina , Nanzanova Ulyana , Kalinchenko Natalia , Hamaganova Irina , Eremina Elena , Filatova Alexandra , Skoblov Mikhail , Tiulpakov Anatoly

Background: 5-α-reductase type 2 enzyme catalyzes the conversion of testosterone into dihydrotestosterone, a potent androgen responsible for male sexual development during the fetal period. From 2017 to 2019, a homozygous hg38_chr2:31529414 C>T variant in SRD5A2 gene have been identified in 3 unrelated patients with DSD 46,XY of Buryat origin. The variant has been previously reported in one patient from China (Song et al, 2019) and l...