NM_000038.6(APC):c.4647del (p.Glu1550fs) AND Familial multiple polyposis syndrome

Clinical significance:Likely pathogenic (Last evaluated: Sep 13, 2019)

Review status:1 star out of maximum of 4 stars

criteria provided, single submitter

Based on:
1 submission [Details]
Record status:

Allele description [Variation Report for NM_000038.6(APC):c.4647del (p.Glu1550fs)]

NM_000038.6(APC):c.4647del (p.Glu1550fs)

APC:APC regulator of WNT signaling pathway [Gene - OMIM - HGNC]
Variant type:
Cytogenetic location:
Genomic location:
Preferred name:
NM_000038.6(APC):c.4647del (p.Glu1550fs)
  • NC_000005.10:g.112840241del
  • NG_008481.4:g.152721del
  • NM_000038.6:c.4647delMANE SELECT
  • NM_001127510.3:c.4647del
  • NM_001127511.3:c.4593del
  • NM_001354895.2:c.4647del
  • NM_001354896.2:c.4701del
  • NM_001354897.2:c.4677del
  • NM_001354898.2:c.4572del
  • NM_001354899.2:c.4563del
  • NM_001354900.2:c.4524del
  • NM_001354901.2:c.4470del
  • NM_001354902.2:c.4374del
  • NM_001354903.2:c.4344del
  • NM_001354904.2:c.4269del
  • NM_001354905.2:c.4167del
  • NM_001354906.2:c.3798del
  • NP_000029.2:p.Glu1550fs
  • NP_001120982.1:p.Glu1550fs
  • NP_001120983.2:p.Glu1532fs
  • NP_001341824.1:p.Glu1550fs
  • NP_001341825.1:p.Glu1568fs
  • NP_001341826.1:p.Glu1560fs
  • NP_001341827.1:p.Glu1525fs
  • NP_001341828.1:p.Glu1522fs
  • NP_001341829.1:p.Glu1509fs
  • NP_001341830.1:p.Glu1491fs
  • NP_001341831.1:p.Glu1459fs
  • NP_001341832.1:p.Glu1449fs
  • NP_001341833.1:p.Glu1424fs
  • NP_001341834.1:p.Glu1390fs
  • NP_001341835.1:p.Glu1267fs
  • LRG_130:g.152721del
  • NC_000005.9:g.112175938del
  • NM_000038.5:c.4647delA
  • p.Glu1550Argfs*15
Protein change:
dbSNP: rs879254283
NCBI 1000 Genomes Browser:
Molecular consequence:
  • NM_000038.6:c.4647del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001127510.3:c.4647del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001127511.3:c.4593del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354895.2:c.4647del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354896.2:c.4701del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354897.2:c.4677del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354898.2:c.4572del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354899.2:c.4563del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354900.2:c.4524del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354901.2:c.4470del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354902.2:c.4374del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354903.2:c.4344del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354904.2:c.4269del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354905.2:c.4167del - frameshift variant - [Sequence Ontology: SO:0001589]
  • NM_001354906.2:c.3798del - frameshift variant - [Sequence Ontology: SO:0001589]


Familial multiple polyposis syndrome (FAP)
Adenomatous polyposis coli; Familial adenomatous polyposis of the colon; Familial polyposis of the colon; See all synonyms [MedGen]
MONDO: MONDO:0021055; MedGen: C0032580; OMIM: PS175100

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Assertion and evidence details

Submission AccessionSubmitterReview Status
(Assertion method)
Clinical Significance
(Last evaluated)
SCV001361213Women's Health and Genetics/Laboratory Corporation of America, LabCorpcriteria provided, single submitter
Likely pathogenic
(Sep 13, 2019)
germlineclinical testing

Citation Link

Summary from all submissions

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

Details of each submission

From Women's Health and Genetics/Laboratory Corporation of America, LabCorp, SCV001361213.1

#EthnicityIndividualsChromosomes TestedFamily HistoryMethodCitations
1not providednot providednot providednot providedclinical testingnot provided


Variant summary: APC c.4647delA (p.Glu1550ArgfsX15) results in a premature termination codon, predicted to cause a truncation of the encoded protein or absence of the protein due to nonsense mediated decay, which are commonly known mechanisms for disease. Truncations downstream of this position have been classified as pathogenic by our laboratory. The variant was absent in 250072 control chromosomes (gnomAD). To our knowledge, no occurrence of c.4647delA in individuals affected with Familial Adenomatous Polyposis and no experimental evidence demonstrating its impact on protein function have been reported. A ClinVar submission (evaluation after 2014) cites the variant as likely pathogenic. Based on the evidence outlined above, the variant was classified as likely pathogenic.

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

Last Updated: Nov 27, 2021

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