ISSN 1662-4009 (online)

ey0017.1-4 | Update on the Genetics of Hypopituitarism | ESPEYB17

1.4. Loss-of-function variants in TBC1D32 underlie syndromic hypopituitarism

J Hietamaki , LC Gregory , S Ayoub , AP Iivonen , K Vaaralahti , X Liu , N Brandstack , AJ Buckton , T Laine , J Kansakoski , M Hero , PJ Miettinen , M Varjosalo , E Wakeling , MT Dattani , T Raivio

To read the full abstract: J Clin Endocrinol Metab. 2020 Feb 15. pii: dgaa078. doi: 10.1210/clinem/dgaa078. PMID: 32060556.Just another gene implicated in hypopituitarism? Yes, but it is a newish cilopathy gene in the hedgehog pathway. Hedgehog family of polypeptides (Sonic (Shh), Indian (Ihh) and desert (Dhh) hedgehog) are signaling molecules that are needed for many cellular events and pl...

ey0017.2-10 | Neonatal Diabetes Mellitus | ESPEYB17

2.10. The clinical and genetic characteristics of permanent neonatal diabetes (PNDM) in the State of Qatar

S Al-Khawaga , I Mohammed , S Saraswathi , B Haris , R Hasnah , A Saeed , H Almabrazi , N Syed , P Jithesh , A El Awwa , A Khalifa , F AlKhalaf , G Petrovski , EM Abdelalim , K Hussain

To read the full abstract: Mol Genet Genomic Med., 2019 Oct;7(10):e00753. doi: 10.1002/mgg3.753. Epub 2019 Aug 23. PMID: 31441606The unique population in the State of Qatar comprises over 2.6 million people who derived primarily from the Middle East and North Africa (MENA) and South Asia regions. Around 15% are indigenous Qataris of Arabian Peninsula ancestries, who have also immigrated to the St...

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

4.4. Cognitive profiles and brain volume are affected in patients with Silver-Russell syndrome

G Patti , L De Mori , D Tortora , M Severino , M Calevo , S Russo , F Napoli , L Confalonieri , M Schiavone , HF Thiabat , E Casalini , G Morana , A Rossi , LA Ramenghi , M Maghnie , N Di Iorgi

To read the full abstract: J Clin Endocrinol Metab, April 2020, 105(4):e1478–e1488Silver–Russell syndrome (SRS) is a rare condition associated with pre and postnatal growth retardation. The most common causes of SRS are 11p15 ICR1 loss of methylation (LOM) and maternal uniparental disomy of chromosome 7 (mUPD7). Almost all patients with SRS have a history of intrauterine growth retardation (IUGR) and may be born small for gestational a...

ey0017.11-13 | Pharmacologic Treatment | ESPEYB17

11.13. Metformin-induced increases in GDF15 are important for suppressing appetite and promoting weight loss

EA Day , RJ Ford , BK Smith , P Mohammadi-Shemirani , MR Morrow , RM Gutgesell , R Lu , AR Raphenya , M Kabiri , AG McArthur , N McInnes , S Hess , G Pare , HC Gerstein , GR Steinberg

To read the full abstract: Nat Metab 2019;1:1202–1208.Metformin has become a mainstay in the treatment of T2DM in over six decades of clinical use and is today one of the world’s most commonly prescribed drugs. Anti-diabetic properties of metformin rely on an inhibition of hepatic glucose output through AMPK-dependent, but also AMPK-independent effects (reviewed in (1)). Neverthel...

ey0017.14-7 | (1) | ESPEYB17

14.7. Dosage analysis of the 7q11.23 Williams region identifies BAZ1B as a major human gene patterning the modern human face and underlying self-domestication

M Zanella , A Vitriolo , A Andirko , PT Martins , S Sturm , T O’Rourke , M Laugsch , N Malerba , A Skaros , S Trattaro , PL Germain , M Mihailovic , G Merla , A Rada-Iglesias , C Boeckx , G. Testa

To read the full abstract: Science Advances 2019;5:eaaw7908This paper shows that the craniofacial and cognitive/behavioral phenotypes caused by alterations at the critical gene region for the Williams-Beuren syndrome is caused by changes in the chromatin remodeler BAZ1B in neural crest, and can serve as an entry point into the evolution of the modern human face and pro-sociality.Williams-Beuren syndrome is caused ...

ey0017.15-15 | (1) | ESPEYB17

15.15. Large-scale GWAS reveals insights into the genetic architecture of same-sex sexual behavior

A Ganna , KJH Verweij , MG Nivard , R Maier , R Wedow , AS Busch , A Abdellaoui , S Guo , JF Sathirapongsasuti , 23andMe Research Team , P Lichtenstein , S Lundstrom , N Langstrom , A Auton , KM Harris , GW Beecham , ER Martin , AR Sanders , JRB Perry , BM Neale , BP Zietsch

To read the full abstract: Science 2019;365:eaat7693.These authors performed a genome-wide association study on 493 001 participants of European-ancestry from the USA, UK, and Sweden to identify genes associated with sexual orientation. They found multiple loci implicated in same-sex sexual behavior indicating that, like other behavioral traits, non-heterosexual behavior is polygenic.As many as 4% to 10% of US individuals ...

ey0016.3-10 | New Genes | ESPEYB16

3.10. Mutations in IRS4 are associated with central hypothyroidism

CA Heinen , EM de Vries , M Alders , H Bikker , N Zwaveling-Soonawala , Akker ELT van den , B Bakker , G Hoorweg-Nijman , F Roelfsema , RC Hennekam , A Boelen , Trotsenburg ASP van , E Fliers

To read the full abstract: J Med Genet. 2018;55:693–700.This genetic study identified, by whole exome sequencing, mutations in the insulin receptor substrate 4 gene (IRS4) in 5 families with isolated central congenital hypothyroidism. Thus, the authors add a fifth genetic cause of isolated congenital hypothyroidism to the previously known genes: TSHB, TRHR, IGSF1, ...

ey0016.4-11 | New Mechanisms | ESPEYB16

4.11. Late-life targeting of the IGF-1 receptor improves healthspan and lifespan in female mice

K Mao , GF Quipildor , T Tabrizian , A Novaj , F Guan , RO Walters , F Delahaye , GB Hubbard , Y Ikeno , K Ejima , P Li , DB Allison , H Salimi-Moosavi , PJ Beltran , P Cohen , N Barzilai , DM Huffman

To read the full abstract: Nat Commun. 2018 19;9:2394.“Somatopause” causes the physiological decline over time in GH secretion leading to low IGF-I levels in aging subjects. GH has been proposed as an anti-aging therapy, but with no evidence of beneficial effects and with some potential risks [1,2]. Therefore, current guidelines do not recommend GH therapy as anti-aging treatme...

ey0016.5-16 | Basic Science - Bone | ESPEYB16

5.16. Discovery of a periosteal stem cell mediating intramembranous bone formation

S Debnath , AR Yallowitz , J McCormick , S Lalani , T Zhang , R Xu , N Li , Y Liu , YS Yang , M Eiseman , JH Shim , M Hameed , JH Healey , MP Bostrom , DA Landau , MB Greenblatt

Abstract: Nature. 2018 Oct;562(7725):133–139.In brief: A newly discovered periosteal stem cell pool with features distinct from other skeletal mesenchymal stem cells (MSCs) is present in murine and human bone and reveals a pivotal function in intramembranous ossification, cortical bone architecture and fracture healing in conditional knockout mouse strains.</st...

ey0016.8-12 | New Genes | ESPEYB16

8.12. Targeted next-generation sequencing detects rare genetic events in pheochromocytoma and paraganglioma

L Ben Aim , P Pigny , LJ Castro-Vega , A Buffet , L Amar , J Bertherat , D Drui , I Guilhem , E Baudin , C Lussey-Lepoutre , C Corsini , G Chabrier , C Briet , L Faivre , C Cardot-Bauters , J Favier , AP Gimenez-Roqueplo , N Burnichon

To read the full abstract: J Med Genet. 2019 Mar 15. pii: jmedgenet-2018-105714. [Epub ahead of print].Paragangliomas and pheochromocytomas (PPGL) are rare neuroendocrine tumours that can arise either from the adrenal medulla (pheochromocytomas, PCC) or from extra-adrenal paraganglia (paragangliomas, PGL). PPGLs are considered to be the most heritable of human tumours with at least...