Searchable abstracts of presentations at key conferences in endocrinology

ea0050p041 | Bone and Calcium | SFEBES2017

Studies of nuclear factor I/X (NFIX) mutations causing the Marshall-Smith syndrome (MSS)

Kooblall Kreepa , Stevenson Mark , Hennekam Raoul , Thakker Rajesh

Marshall-Smith syndrome (MSS) is a congenital disorder characterised by developmental delay, failure to thrive and skeletal abnormalities such as accelerated osseous development, osteopenia, bullet-shaped middle phalanges and kyphoscoliosis. MSS is caused by truncating or frameshift mutations of the nuclear factor I/X (NFIX) gene, which encodes a ubiquitously expressed transcription factor that regulates expression of viral and cellular genes, i...

ea0050p041 | Bone and Calcium | SFEBES2017

Studies of nuclear factor I/X (NFIX) mutations causing the Marshall-Smith syndrome (MSS)

Kooblall Kreepa , Stevenson Mark , Hennekam Raoul , Thakker Rajesh

Marshall-Smith syndrome (MSS) is a congenital disorder characterised by developmental delay, failure to thrive and skeletal abnormalities such as accelerated osseous development, osteopenia, bullet-shaped middle phalanges and kyphoscoliosis. MSS is caused by truncating or frameshift mutations of the nuclear factor I/X (NFIX) gene, which encodes a ubiquitously expressed transcription factor that regulates expression of viral and cellular genes, i...

ea0077oc5.4 | Bone and Calcium | SFEBES2021

Nuclear factor I/X (NFIX) regulates the transcriptional activity of the cellular retinoic acid binding protein 2 (CRABP2) promoter and alters CRABP2 expression in Marshall-Smith Syndrome (MSS) patients.

Kooblall Kreepa , Stevenson Mark , Lines Kate , Stewart Michelle , Wells Sara , Teboul Lydia , Hennekam Raoul , Thakker Rajesh

Marshall-Smith syndrome (MSS) is a congenital disorder affecting skeletal and neural development, due to mutations in the nuclear factor I/X (NFIX) gene. NFIX encodes a ubiquitously expressed transcription factor that regulates the expression of viral and cellular genes. To identify novel genes that are misregulated by NFIX mutations, RNA sequencing and proteomics analyses were performed on mouse embryonic fibroblast (MEF) cells derived from a repres...

ea0038p2 | Bone | SFEBES2015

Exploring the N-ethyl-N-nitrosourea mutagenesis DNA archive for mutations in nuclear factor I/X to derive mouse models for Marshall-Smith syndrome

Kooblall Kreepa , Stevenson Mark , Piret Sian , Potter Paul , Cox Roger , Brown Steve , Hennekam Raoul , Thakker Rajesh

Marshall-Smith syndrome (MSS) is a congenital disorder affecting skeletal and neural development due to mutations in the nuclear factor I/X (NFIX) gene. Of these mutations, 61% are small insertions/deletions, 12% are splice site mutations and 27% are large exonic deletions clustered in exons 6–10 of the NFIX gene. In order to derive a MSS mouse model, the N-ethyl-N-nitrosourea (ENU) mutagenesis DNA archive was screened ...

ea0023oc3.3 | Oral Communications 3 | BSPED2009

Mutations in the SLC29A3 gene encoding the human equilibrative nucleoside transporter-3 protein (hENT3) is associated with pigmentary hypertrichosis; insulin dependent diabetes mellitus (PHID); short stature and hypogonadism

Padidela Raja , James Chela , Hennekam Raoul , Cliffe Simon , Roscioli Tony , Buckley Michael , Hussain Khalid

Background: PHID syndrome has been recently described as a unique syndrome characterised by pigmented hypertrichosis; non immune mediated insulin depended diabetes mellitus (DM). Other associated features of the syndrome include pancreatic exocrine insufficiency, short stature and hypogonadism.Aims: To identify the genetic basis of PHID syndrome in six patients from five unrelated families and to characterise the endocrine features associated with this s...

ea0065oc3.1 | Bone and Calcium | SFEBES2019

A mouse model generated by CRISPR-Cas9 with a frameshift mutation in the nuclear factor 1/X (NFIX) gene has phenotypic features reported in Marshall-Smith Syndrome (MSS) patients

Kooblall Kreepa , Stevenson Mark , Stewart Michelle , Szoke-Kovacs Zsombor , Hough Tertius , Leng Houfu , Horwood Nicole , Vincent Tonia , Hennekam Raoul , Potter Paul , Cox Roger , Brown Stephen , Wells Sara , Teboul Lydia , Thakker Rajesh

Marshall-Smith syndrome (MSS) is a congenital disorder characterised by developmental delay, short stature, respiratory difficulties, distinctive facial features, skeletal abnormalities (such as kyphoscoliosis, dysostosis and osteopenia) and delayed neural development, and is due to heterozygous mutations that are clustered in exons 6–10 of the transcription factor nuclear factor I/X (NFIX) gene. These frameshift and splice-site NFIX variants result in t...

ea0031oc2.1 | Steroids and thyroid | SFEBES2013

Loss-of-function mutations in IGSF1 cause a novel, X-linked syndrome of central hypothyroidism and testicular enlargement

Schoenmakers Nadia , Sun Yu , Bak Beata , van Trotsenburg Paul , Oostdyk Wilma , Voshol Peter , Persani Luca , Davis Timothy , le Tissier Paul , Gharavy Neda , Appelman-Dijkstra Natasha , Pereira Alberto , den Dunnen Johan , Breuning Martijn , Hennekam Raoul , Chatterjee V Krishna , Dattani Mehul , Bernard Daniel , Wit Jan-Maarten

Introduction: Congenital central hypothyroidism occurs either as isolated TSH deficiency or in conjunction with other pituitary hormone deficits. Undetected central hypothyroidism is associated with developmental delay in children and adverse cardiometabolic sequelae in adults. Hitherto, mutations in the TRH receptor (TRHR) or TSHβ subunit (TSHB) genes are the only known causes of isolated TSH deficiency.Methods: Using whole exome and candidate gene...

ea0030oc1.8 | Oral Communications 1 | BSPED2012

Loss-of-function mutations in IGSF1 cause a novel, X-linked syndrome of central hypothyroidism and testicular enlargement

Schoenmakers Nadia , Bak Beata , Sun Yu , van Trotsenburg Paul , Oostdijk Wilma , Voshol Peter , Persani Luca , Davis Timothy , le Tissier Paul , Gharavy Neda , Appelman-Dijkstra Natasha , Pereira Alberto , Dunnen Johan den , Breuning Martijn , Hennekam Raoul , Chatterjee V Krishna , Dattani Mehul , Bernard Daniel , Wit Jan-Maarten

Introduction: Congenital central hypothyroidism occurs either as isolated TSH deficiency or in conjunction with other pituitary hormone deficits. Undetected central hypothyroidism is associated with developmental delay in children and adverse cardiometabolic sequelae in adults. Hitherto, mutations in the TRH receptor (TRHR) or TSHβ subunit (TSHB) genes are the only known causes of isolated TSH deficiency.Methods: Using whole exome and candidate gene...