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NM_175914.5(HNF4A):c.187C>T (p.Arg63Trp) AND Maturity onset diabetes mellitus in young

Germline classification:
Pathogenic (1 submission)
Last evaluated:
Mar 5, 2019
Review status:
1 star out of maximum of 4 stars
criteria provided, single submitter
Somatic classification
of clinical impact:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Somatic classification
of oncogenicity:
None
Review status:
(0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided
Record status:
current
Accession:
RCV002408643.9

Allele description [Variation Report for NM_175914.5(HNF4A):c.187C>T (p.Arg63Trp)]

NM_175914.5(HNF4A):c.187C>T (p.Arg63Trp)

Gene:
HNF4A:hepatocyte nuclear factor 4 alpha [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
20q13.12
Genomic location:
Preferred name:
NM_175914.5(HNF4A):c.187C>T (p.Arg63Trp)
Other names:
R76W; NM_175914.5(HNF4A):c.187C>T; p.Arg63Trp
HGVS:
  • NC_000020.11:g.44406195C>T
  • NG_009818.1:g.55395C>T
  • NM_000457.6:c.253C>T
  • NM_001030003.3:c.187C>T
  • NM_001030004.3:c.187C>T
  • NM_001258355.2:c.232C>T
  • NM_001287182.2:c.178C>T
  • NM_001287183.2:c.178C>T
  • NM_001287184.2:c.178C>T
  • NM_175914.5:c.187C>TMANE SELECT
  • NM_178849.3:c.253C>T
  • NM_178850.3:c.253C>T
  • NP_000448.3:p.Arg85Trp
  • NP_000448.3:p.Arg85Trp
  • NP_001025174.1:p.Arg63Trp
  • NP_001025175.1:p.Arg63Trp
  • NP_001245284.1:p.Arg78Trp
  • NP_001274111.1:p.Arg60Trp
  • NP_001274112.1:p.Arg60Trp
  • NP_001274113.1:p.Arg60Trp
  • NP_787110.2:p.Arg63Trp
  • NP_787110.2:p.Arg63Trp
  • NP_849180.1:p.Arg85Trp
  • NP_849181.1:p.Arg85Trp
  • LRG_483t1:c.187C>T
  • LRG_483t2:c.253C>T
  • LRG_483:g.55395C>T
  • LRG_483p1:p.Arg63Trp
  • LRG_483p2:p.Arg85Trp
  • NC_000020.10:g.43034835C>T
  • NM_000457.4:c.253C>T
  • NM_000457.5:c.253C>T
  • NM_175914.3:c.187C>T
  • NM_175914.4:c.187C>T
  • P41235:p.Arg85Trp
Note:
NCBI staff reviewed the sequence information reported in PubMeds 22802087 and 24285859 to determine the location of this allele on the current reference sequence. The Arg76Trp codon numbering is based on NP_000448.1, which uses an ATG initiation codon that is 9-AAs downstream of that specified for NP_000448.3, for which the numbering would be Arg85Trp.
Protein change:
R60W; ARG76TRP
Links:
UniProtKB: P41235#VAR_071951; OMIM: 600281.0008; dbSNP: rs587777732
NCBI 1000 Genomes Browser:
rs587777732
Molecular consequence:
  • NM_000457.6:c.253C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001030003.3:c.187C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001030004.3:c.187C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001258355.2:c.232C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001287182.2:c.178C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001287183.2:c.178C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_001287184.2:c.178C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_175914.5:c.187C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_178849.3:c.253C>T - missense variant - [Sequence Ontology: SO:0001583]
  • NM_178850.3:c.253C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:
Maturity onset diabetes mellitus in young (MODY)
Synonyms:
Mason type diabetes
Identifiers:
MONDO: MONDO:0018911; MedGen: C0342276; Orphanet: 552; OMIM: 606391; Human Phenotype Ontology: HP:0004904

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
OriginMethodCitations
SCV002722393Ambry Genetics
criteria provided, single submitter

(Ambry Variant Classification Scheme 2023)
Pathogenic
(Mar 5, 2019)
germlineclinical testing

PubMed (8)
[See all records that cite these PMIDs]

Citation Link

Summary from all submissions

EthnicityOriginAffectedIndividualsFamiliesChromosomes testedNumber TestedFamily historyMethod
not providedgermlineunknownnot providednot providednot providednot providednot providedclinical testing

Citations

PubMed

Diazoxide-responsive hyperinsulinemic hypoglycemia caused by HNF4A gene mutations.

Flanagan SE, Kapoor RR, Mali G, Cody D, Murphy N, Schwahn B, Siahanidou T, Banerjee I, Akcay T, Rubio-Cabezas O, Shield JP, Hussain K, Ellard S.

Eur J Endocrinol. 2010 May;162(5):987-92. doi: 10.1530/EJE-09-0861. Epub 2010 Feb 17.

PubMed [citation]
PMID:
20164212
PMCID:
PMC2857991

Novel presentations of congenital hyperinsulinism due to mutations in the MODY genes: HNF1A and HNF4A.

Stanescu DE, Hughes N, Kaplan B, Stanley CA, De León DD.

J Clin Endocrinol Metab. 2012 Oct;97(10):E2026-30. doi: 10.1210/jc.2012-1356. Epub 2012 Jul 16.

PubMed [citation]
PMID:
22802087
PMCID:
PMC3674296
See all PubMed Citations (8)

Details of each submission

From Ambry Genetics, SCV002722393.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (8)

Description

The p.R63W pathogenic mutation (also known as c.187C>T, p.R85W, and p.R76W), located in coding exon 2 of the HNF4A gene, results from a C to T substitution at nucleotide position 187. The arginine at codon 63 is replaced by tryptophan, an amino acid with dissimilar properties. This mutation has been detected in individuals with diazoxide responsive hyperinsulinemic hypoglycemia (HH), Fanconi syndrome, nephrocalcinosis, congenital hyperinsulinism (CHI) and hypoglycemia (Flanagan SE et al. Eur. J. Endocrinol., 2010 May;162:987-92; Hamilton AJ et al. J. Med. Genet., 2014 Mar;51:165-9; Numakura C et al. Diabetes Res. Clin. Pract., 2015 Jun;108:e53-5; Walsh SB et al. BMC Nephrol, 2017 Jul;18:230). In addition, this mutation has been detected as de novo occurrences (paternity not confirmed) in one individual with hyperinsulinism, hepatomegaly, macrosomia, and renal Fanconi syndrome (Stanescu DE et al. J. Clin. Endocrinol. Metab., 2012 Oct;97:E2026-30), in another with hyperinsulinaemic hypoglycaemia and renal tubulopathy (Clemente M et al. Endocrinol Diabetes Metab Case Rep, 2017 Mar;2017:), and in one with Fanconi syndrome, infantile hyperinsulinemic hypoglycemia, transient cholestasis, and bilateral severe hearing loss. (Liu J et al. J Med Case Rep, 2018 Jul;12:203). A different alteration located at the same position, p.R63Q, has been detected in two families with maturity-onset diabetes of the young (MODY); however, specific phenotypic info was not provided (Colclough K et al. Hum. Mutat., 2013 May;34:669-85). In addition, based on internal structural analysis, this variant is more disruptive than known pathogenic variants nearby. Based on the supporting evidence, this alteration is interpreted as a disease-causing mutation.

#SampleMethodObservation
OriginAffectedNumber testedTissuePurposeMethodIndividualsAllele frequencyFamiliesCo-occurrences
1germlineunknownnot providednot providednot providednot providednot providednot providednot provided

Last Updated: Nov 30, 2024