ISSN 1662-4009 (online)

ey0015.14-8 | Imprinting without DNA methylation | ESPEYB15

14.8 Maternal H3K27me3 controls DNA methylation-independent imprinting

A Inoue , L Jiang , F Lu , T Suzuki , Y Zhang

To read the full abstract: Nature 2017;547:419Since the identification of DNA methylation as a master regulator of genomic imprinting more than 20 years ago, it has been the only known mammalian germline imprinting mark. However, recent studies have identified several imprinted genes capable of maintaining paternal allele-specific expression in the absence of oocyte DNA methylation. Here, t...

ey0020.1-3 | Antenatal and Perinatal Thyroidology | ESPEYB20

1.3. Incidence of and risk factors for neonatal hypothyroidism among women with Graves' disease treated with antithyroid drugs until delivery

A Yoshihara , JY Noh , K Inoue , N Watanabe , M Fukushita , M Matsumoto , N Suzuki , A Suzuki , A Kinoshita , R Yoshimura , A Aida , H Imai , S Hiruma , K Sugino , K Ito

Brief summary: Neonates of mothers suffering from Graves’ Disease during pregnancy are at risk for hyper- or hypothyroidism postnatally. The risk for hypothyroidism of neonates exposed to maternal anti-thyroid drugs until birth is unknown. This large retrospective study aimed at investigating 1) the incidence of hypothyroid neonates in a large cohort of mothers treated with anti-thyroid drugs until birth, and 2) identify a cutoff for maternal anti-thyroid drug doses assoc...

ey0020.2-14 | New Perspectives | ESPEYB20

2.14. Pathogenic copy number and sequence variants in children born SGA with short stature without imprinting disorders

K Hara-Isono , A Nakamura , T Fuke , T Inoue , S Kawashima , K Matsubara , S Sano , K Yamazawa , M Fukami , T Ogata , M Kagami

Brief summary: This observational study aimed at clarifying the contribution of pathogenic copy number variants (PCNVs) and candidate pathogenic variants in 86 children born small-for-gestational-age with short stature (SGA-SS).Approximately 10% of children born SGA do not show catch-up and remain permanently short (SGA-SS) (1,2). There is increasing evidence suggesting that genetic abnormalities underlie a high proportion of SGA-SS children. In this stu...

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...

ey0018.1-7 | Development/Ontogeny | ESPEYB18

1.7. Activating mutations in BRAF disrupt the hypothalamo-pituitary axis leading to hypopituitarism in mice and humans

A Gualtieri , N Kyprianou , LC Gregory , ML Vignola , JG Nicholson , R Tan , SI Inoue , V Scagliotti , P Casado , J Blackburn , F Abollo-Jimenez , E Marinelli , REJ Besser , W Hogler , I Karen Temple , JH Davies , A Gagunashvili , ICAF Robinson , SA Camper , SW Davis , PR Cutillas , EF Gevers , Y Aoki , MT Dattani , C Gaston-Massuet

Nat Commun. 2021 Apr 1;12(1):2028. doi: 10.1038/s41467-021-21712-4. PMID: 33795686.The authors describe 5 patients with Cardio-Facio-Cutaneous (CFC) syndrome with features of septo−optic dysplasia (SOD), and GH/IGF−1 deficiency of variable degree. All were identified to carry a gain−of−function mutation in BRAF.RASopathies encompass Noonan ...