ISSN 1662-4009 (online)

ey0021.2-8 | Genotype-Phenotype and SRS | ESPEYB21

2.8. Pathogenic sequence variant and microdeletion affecting HMGA2 in Silver- Russell syndrome: case reports and literature review

K Yamoto , H Saitsu , Y Ohkubo , M Kagami , T Ogata

Brief Summary: Two Japanese children with Silver Russell Syndrome (SRS) are reported, one with a de novo pathogenic frameshift sequence variant (Case 1) and the other with a 3.4 MB de novo microdeletion (Case 2) in HMGA2 (High Mobility Group AT-hook 2; OMIM *600,698). Both genetic findings meet the criteria established by the ACMG/AMP1. Case 1 had 5 of 6 (no body asymmetry) and Case 2 had 4 of 6 (no prominent forehead or body asymmetry) of...

ey0021.6-4 | DSD - Novel Genes and Mechanisms involved in Gonadal Development | ESPEYB21

6.4. Microdeletion at ESR1 intron 6 (DEL_6_75504) is a susceptibility factor for cryptorchidism and hypospadias

Y Masunaga , Y Fujisawa , F Massart , C Spinelli , Y Kojima , K Mizuno , Y Hayashi , I Sasagawa , R Yoshida , F Kato , M Fukami , N Kamatani , H Saitsu , T Ogata

Brief Summary: This translational study identifies a new susceptibility region within the estrogen receptor α ( ESR1 ) gene, linked to cryptorchidism (CO) and hypospadias (HS), the most common birth defects of the male genital tract. CO occurs in approximately 1:100 male births and is 3-times more common in premature infants, while HS affects about 1:300 male births. The prevalence of both conditions has increased over the years, with premature infants showing hi...

ey0017.4-3 | Important for clinical practice | ESPEYB17

4.3. IGF2 Mutations

Y Masunaga , T Inoue , K Yamoto , Y Fujisawa , Y Sato , Y Kawashima-Sonoyama , N Morisada , K Iijima , Y Ohata , N Namba , H Suzumura , R Kuribayashi , Y Yamaguchi , H Yoshihashi , M Fukami , H Saitsu , M Kagami , T Ogata

To read the full abstract: J Clin Endocrinol Metab. 2020 Jan 1;105(1):dgz034.Using different genetic approaches, the authors identified 5 novel pathogenic or likely pathogenic IGF2 gene variants in Japanese patients who underwent genetic testing for the variable associations of multiple congenital anomalies such as mental retardation, Silver-Russell syndrome (SRS), disorders of sex development (DSD), ectrodactyly (split hand/foot malfor...

ey0017.6-7 | Differences/Disorders of Sex Development: Genetics | ESPEYB17

6.7. MYRF haploinsufficiency causes 46,XY and 46,XX disorders of sex development: Bioinformatics consideration

K Hamanaka , A Takata , Y Uchiyama , S Miyatake , N Miyake , S Mitsuhashi , K Iwama , A Fujita , E Imagawa , AN Alkanaq , E Koshimizu , Y Azuma , M Nakashima , T Mizuguchi , H Saitsu , Y Wada , S Minami , Y Katoh-Fukui , Y Masunaga , M Fukami , T Hasegawa , T Ogata , N Matsumoto

To read the full abstract: Hum Mol Genet. 2019, Jul 15; 28: 2319–29. doi: https://academic.oup.com/hmg/article/28/14/2319/5424416This study provides evidence that MYRF is important in the development of coelomic endothelial derived cells, and early gonadal development in both males and females. It combines detailed phenotypic assessment of patients and whole geno...