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NM_005359.6(SMAD4):c.850C>T (p.Gln284Ter) AND Juvenile polyposis syndrome

Germline classification:
Pathogenic (1 submission)
Last evaluated:
Oct 21, 2022
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:
RCV002899128.2

Allele description

NM_005359.6(SMAD4):c.850C>T (p.Gln284Ter)

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.850C>T (p.Gln284Ter)
HGVS:
  • NC_000018.10:g.51058402C>T
  • NG_013013.2:g.95363C>T
  • NM_001407041.1:c.850C>T
  • NM_001407042.1:c.850C>T
  • NM_001407043.1:c.850C>T
  • NM_005359.6:c.850C>TMANE SELECT
  • NP_001393970.1:p.Gln284Ter
  • NP_001393971.1:p.Gln284Ter
  • NP_001393972.1:p.Gln284Ter
  • NP_005350.1:p.Gln284Ter
  • NP_005350.1:p.Gln284Ter
  • LRG_318t1:c.850C>T
  • LRG_318:g.95363C>T
  • LRG_318p1:p.Gln284Ter
  • NC_000018.9:g.48584772C>T
  • NM_005359.5:c.850C>T
  • NR_176264.1:n.1450C>T
  • NR_176265.1:n.1388C>T
Protein change:
Q284*
Molecular consequence:
  • NM_001407041.1:c.850C>T - nonsense - [Sequence Ontology: SO:0001587]
  • NM_001407042.1:c.850C>T - nonsense - [Sequence Ontology: SO:0001587]
  • NM_001407043.1:c.850C>T - nonsense - [Sequence Ontology: SO:0001587]
  • NM_005359.6:c.850C>T - 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

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Assertion and evidence details

Help
Submission AccessionSubmitterReview Status
(Assertion method)		Clinical Significance
(Last evaluated)		OriginMethodCitations
SCV003243638Invitae
criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))		Pathogenic
(Oct 21, 2022) 		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 Invitae, SCV003243638.2

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

Description

For these reasons, this variant has been classified as Pathogenic. This variant has not been reported in the literature in individuals affected with SMAD4-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Gln284*) 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).

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

Last Updated: Feb 20, 2024