U.S. flag

An official website of the United States government

NM_005359.6(SMAD4):c.803G>A (p.Trp268Ter) AND Juvenile polyposis syndrome

Germline classification:
Pathogenic (1 submission)
Last evaluated:
Jan 19, 2024
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:
RCV002889248.3

Allele description [Variation Report for NM_005359.6(SMAD4):c.803G>A (p.Trp268Ter)]

NM_005359.6(SMAD4):c.803G>A (p.Trp268Ter)

Gene:
SMAD4:SMAD family member 4 [Gene - OMIM - HGNC]
Variant type:
single nucleotide variant
Cytogenetic location:
18q21.2
Genomic location:
Preferred name:
NM_005359.6(SMAD4):c.803G>A (p.Trp268Ter)
HGVS:
  • NC_000018.10:g.51058355G>A
  • NG_013013.2:g.95316G>A
  • NM_001407041.1:c.803G>A
  • NM_001407042.1:c.803G>A
  • NM_001407043.1:c.803G>A
  • NM_005359.6:c.803G>AMANE SELECT
  • NP_001393970.1:p.Trp268Ter
  • NP_001393971.1:p.Trp268Ter
  • NP_001393972.1:p.Trp268Ter
  • NP_005350.1:p.Trp268Ter
  • NP_005350.1:p.Trp268Ter
  • LRG_318t1:c.803G>A
  • LRG_318:g.95316G>A
  • LRG_318p1:p.Trp268Ter
  • NC_000018.9:g.48584725G>A
  • NM_005359.5:c.803G>A
  • NR_176264.1:n.1403G>A
  • NR_176265.1:n.1341G>A
Protein change:
W268*
Molecular consequence:
  • NM_001407041.1:c.803G>A - nonsense - [Sequence Ontology: SO:0001587]
  • NM_001407042.1:c.803G>A - nonsense - [Sequence Ontology: SO:0001587]
  • NM_001407043.1:c.803G>A - nonsense - [Sequence Ontology: SO:0001587]
  • NM_005359.6:c.803G>A - nonsense - [Sequence Ontology: SO:0001587]

Condition(s)

Name:
Juvenile polyposis syndrome (JPS)
Synonyms:
Polyposis juvenile intestinal; Polyposis familial of entire gastrointestinal tract
Identifiers:
MONDO: MONDO:0017380; MedGen: C0345893; Orphanet: 2929; OMIM: 174900

Recent activity

Clear Turn Off Turn On

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...

Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV003231956Labcorp Genetics (formerly Invitae), Labcorp
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Pathogenic
(Jan 19, 2024) 		germlineclinical testing

PubMed (4)
[See all records that cite these PMIDs]

Help

Summary from all submissions

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

Citations

PubMed

Vessels' morphology in SMAD4 and BMPR1A-related juvenile polyposis.

Handra-Luca A, Condroyer C, de Moncuit C, Tepper M, Fléjou JF, Thomas G, Olschwang S.

Am J Med Genet A. 2005 Oct 1;138A(2):113-7.

PubMed [citation]
PMID:
16152648

Mutation screening in juvenile polyposis syndrome.

Pyatt RE, Pilarski R, Prior TW.

J Mol Diagn. 2006 Feb;8(1):84-8.

PubMed [citation]
PMID:
16436638
PMCID:
PMC1867574
See all PubMed Citations (4)

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV003231956.2

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testing PubMed (4)

Description

This sequence change creates a premature translational stop signal (p.Trp268*) in the SMAD4 gene. It is expected to result in an absent or disrupted protein product. Loss-of-function variants in SMAD4 are known to be pathogenic (PMID: 16152648, 16436638, 22810475). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SMAD4-related conditions. ClinVar contains an entry for this variant (Variation ID: 2026527). For these reasons, this variant has been classified as Pathogenic.

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

Last Updated: Sep 29, 2024