ISSN 1662-4009 (online)

ey0015.7-11 | New genes in hypogonadotropic hypogonadism | ESPEYB15

7.11 KLB, encoding β-Klotho, is mutated in patients with congenital hypogonadotropic hypogonadism

C Xu , A Messina , E Somm , H Miraoui , T Kinnunen , J Acierno , NJ Niederländer , J Bouilly , AA Dwyer , Y Sidis , D Cassatella , GP Sykiotis , R Quinton , C De Geyter , M Dirlewanger , V Schwitzgebel , TR Cole , AA Toogood , JM Kirk , L Plummer , U Albrecht , WF Crowley , M Mohammadi , M Tena-Sempere , V Prevot , N Pitteloud

To read the full abstract: EMBO Mol Med. 2017 Oct;9(10):1379-1397[Comments on 7.10 and 7.11] During embryonic development, GnRH neurons originate in the olfactory placode and migrate through the nasal mesenchyme using the olfactory/vomeronasal axons as a scaffold to reach their final destination in the basal forebrain1,2. Th...

ey0018.3-4 | Thyroid development | ESPEYB18

3.4. Single-cell transcriptome analysis reveals thyrocyte diversity in the zebrafish thyroid gland

P Gillotay , M Shankar , B Haerlingen , E Sema Elif , M Pozo-Morales , I Garteizgogeascoa , S Reinhardt , A Krankel , J Blasche , A Petzold , N Ninov , G Kesavan , C Lange , M Brand , A Lefort , F Libert , V Detours , S Costagliola , S Sumeet Pal

EMBO Rep. 2020;21:e50612. doi: 10.15252/embr.202050612.This zebrafish study identified and molecularly characterized adult transcriptionally different thyrocyte subpopulations even within the same follicle.It is well established that within a thyroid gland, follicles are heterogenous concerning functional activity. More active follicles are characterized by a high co...

ey0018.4-12 | New Perspectives | ESPEYB18

4.12. DNA methylation profiling and genomic analysis in 20 children with short stature who were born small for gestational age

S Peeters , K Declerck , M Thomas , E Boudin , D Beckers , O Chivu , C Heinrichs , K Devriendt , F de Zegher , Hul Van , Vanden Wim , V Berghe , J De Schepper , R Rooman , G Mortier

J Clin Endocrinol Metab. 2020;105(2):dgaa465. doi: 10.1210/clinem/dgaa465. PMID: 32685970This study aimed to identify potential (epi)genetic causes of short stature in 20 SGA children (13 boys; 7 girls) treated with rhGH. Exome sequencing, single-nucleotide polymorphism (SNP) array (both performed in the whole cohort) and genome-wide methylation analysis (performed in a random subset of 10 ...

ey0018.6-4 | Basic and Genetic Research of DSD | ESPEYB18

6.4. COG6-CDG: Expanding the phenotype with emphasis on glycosylation defects involved in the causation of male disorders of sex development.

H Mandel , N Cohen Kfir , A Fedida , E Shuster Biton , M Odeh , L Kalfon , S Ben- Harouch , V Fleischer Sheffer , Y Hoffman , Y Goldberg , A Dinwiddie , E Dumin , A Eran , L Apel-Sarid , D Tiosano , TC Falik-Zaccai

Clin Genet. 2020 Oct;98(4):402–407. 10.1111/cge.13816. PMID: 32683677.This short report describes two 46,XY siblings of consanguineous parents manifesting a complex syndrome consisting of multiple dysmorphic features including growth and developmental retardation, gastrointestinal disorders, musculoskeletal and cardiac anomalies, as well as ambiguous genitalia (non-palpable testes, micropenis, und...

ey0018.11-3 | New hope: Increased diagnostic yield for disease causing MC4R variants and pharmacological treatment options | ESPEYB18

11.3. Human MC4R variants affect endocytosis, trafficking and dimerization revealing multiple cellular mechanisms involved in weight regulation

B Brouwers , EM de Oliveira , M Marti-Solano , FBF Monteiro , SA Laurin , JM Keogh , E Henning , R Bounds , CA Daly , S Houston , V Ayinampudi , N Wasiluk , D Clarke , B Plouffe , M Bouvier , MM Babu , IS Farooqi , J Mokrosiński

J Cell Rep. 2021 Mar 23;34(12):108862. 10.1016/j.celrep.2021.108862. https://pubmed.ncbi.nlm.nih.gov/33761344/This study demonstrates that MC4R variants found in humans affect receptor endocytosis, trafficking and dimerization and thus reveal multiple cellular mechanisms involved in weight regulation. The findings contributes to our und...

ey0018.14-8 | (1) | ESPEYB18

14.8. Mesenchyme-derived IGF2 is a major paracrine regulator of pancreatic growth and function

Hammerle Constanze M , Sandovici Ionel , Brierley Gemma V , Smith Nicola M , Zimmer Warren E , Zvetkova Ilona , Prosser Haydn M , Sekita Yoichi , Lam Brian YH , Ma Marcella , Cooper Wendy N , Vidal-Puig Antonio , Ozanne Susan E , Medina-Gomez Gema , Constancia Miguel

PLoS Genet. 2020; 16(10): e1009069. doi: https://doi.org/10.1371/journal.pgen.1009069The authors used mouse conditional gene knock-out models to investigate the role of Insulin-like growth factor-2 (Igf2) in pancreatic growth and function. When Igf2 was deleted specifically in mesenchyme-derived cells (but not when deleted in exocrine and endocrine cells), the entire pancreas was smal...

ey0019.2-5 | Neonatal hypoglycaemia | ESPEYB19

2.5. PNC2 (SLC25A36) deficiency associated with the hyperinsulinism/hyperammonemia syndrome

MA Shahrour , FM Lasorsa , V Porcelli , I Dweikat , MA Di Noia , M Gur , G Agostino , A Shaag , T Rinaldi , G Gasparre , F Guerra , A Castegna , S Todisco , B Abu-Libdeh , O Elpeleg , L Palmieri

J Clin Endocrinol Metab. 2021 19;107(5):1346-1356. doi: 10.1210/clinem/dgab932. PMID: 34971397.Brief Summary: This is a case report of a potentially new genetic disorder that causes hyperinsulinaemic hypoglycemia, protein sensitivity and high serum ammonia level (Hyperinsulinism/hyperammonemia syndrome (HI/HA) syndrome). Mutations in the solute the carrier family 25, member 36 (SLC25A36) may b...

ey0019.3-7 | Congenital hypothyroidism | ESPEYB19

3.7. Treatment of congenital hypothyroidism: comparison between L-thyroxine oral solution and tablet formulations up to 3 years of age

MC Vigone , R Ortolano , G Vincenzi , C Pozzi , M Ratti , V Assirelli , S Vissani , P Cavarzere , A Mussa , R Gastaldi , Mase R Di , M Salerno , ME Street , J Trombatore , G Weber , A Cassio

Eur J Endocrinol. 2021 Nov 30;186(1):45-52. doi: 10.1530/EJE-20-1444. PMID: 34714772Brief Summary: This retrospective multicenter study examined the biochemical and neurocognitive outcomes of n=254 patients with congenital hypothyroidism (CH) at age 3 years, treated with either LT4 drops (n=117) or LT4 tablets (n=137). Overall, neurocognitive outcome was not different between the two treatment gr...

ey0019.9-11 | Fertility issues and reproductive outcomes in childhood cancer survivors | ESPEYB19

9.11. Assessment of the architecture and integrity of frozen-thawed testicular tissue from (pre)pubertal boys with cancer

Rives-Feraille A. , Liard A. , Bubenheim M. , Barbotin A.L. , Giscard d'Estaing S. , Mirallie S. , Ancelle A. , Roux C. , Brugnon F. , Greze V. , Daudin M. , Willson-Plat G. , Dubois R. , Sibert L. , Schneider P. , Rives N.

nathalie.rives@chu-rouen.fr Andrology. 2022; 10: 279–290. PMID: 34628730.Brief Summary: This multicentric prospective study performed an accurate evaluation of testicular tissue after frozen-thawing to investigate if this testicular tissue freezing (TTF) alters testicular architecture and integrity in pre-pubertal and pubertal boys with cancer. Promising histological outcomes were found. ...

ey0019.11-5 | New findings in adipose tissue biology | ESPEYB19

11.5. Insulin directly regulates the circadian clock in adipose tissue

N Tuvia , O Pivovarova-Ramich , V Murahovschi , S Luck , A Grudziecki , AC Ost , M Kruse , VJ Nikiforova , M Osterhoff , P Gottmann , O Gogebakan , C Sticht , N Gretz , M Schupp , A Schurmann , N Rudovich , AFH Pfeiffer , A Kramer

achim.kramer@charite.de Diabetes 2021;70:1985–1999http://www.ncbi.nlm.nih.gov/pubmed/34226282Brief Summary: This study analyzed gene expression in subcutaneous adipose tissue samples of adults with obesity collected before and after the hyperinsulinemic–euglycemic clamp or control saline infusion. They demonstrate that insulin regulat...