NM_000492.4(CFTR):c.1572C>A (p.Cys524Ter) AND Cystic fibrosis

Germline classification:: Pathogenic (5 submissions)
Last evaluated:: Mar 17, 2017
Review status:: 3 stars out of maximum of 4 stars
reviewed by expert panel

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:: RCV000007571.17

Allele description [Variation Report for NM_000492.4(CFTR):c.1572C>A (p.Cys524Ter)]

NM_000492.4(CFTR):c.1572C>A (p.Cys524Ter)

Genes:

CFTR:CF transmembrane conductance regulator [Gene - OMIM - HGNC]
CFTR-AS1:CFTR antisense RNA 1 [Gene - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

7q31.2

Genomic location:

Preferred name:

NM_000492.4(CFTR):c.1572C>A (p.Cys524Ter)

HGVS:

NC_000007.14:g.117559643C>A
NG_016465.4:g.98860C>A
NM_000492.4:c.1572C>AMANE SELECT
NP_000483.3:p.Cys524Ter
NP_000483.3:p.Cys524Ter
LRG_663t1:c.1572C>A
LRG_663:g.98860C>A
LRG_663p1:p.Cys524Ter
NC_000007.13:g.117199697C>A
NM_000492.3:c.1572C>A
p.Cys524X

Protein change:

C524*; CYS524TER

Links:

OMIM: 602421.0047; dbSNP: rs121908754

NCBI 1000 Genomes Browser:

rs121908754

Molecular consequence:

NM_000492.4:c.1572C>A - nonsense - [Sequence Ontology: SO:0001587]

Condition(s)

Name:: Cystic fibrosis (CF)
Synonyms:: Mucoviscidosis
Identifiers:: MONDO: MONDO:0009061; MedGen: C0010674; Orphanet: 586; OMIM: 219700

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000027772	OMIM	no assertion criteria provided	Pathogenic (Apr 1, 1992)	germline	literature only	PubMed (1) [See all records that cite this PMID]
SCV000245954	CFTR2 - CFTR2	reviewed by expert panel (Sosnay PR et al. (Nat Genet 2013))	Pathogenic (Mar 17, 2017)	germline	research	PubMed (1) [See all records that cite this PMID] Citation Link,
SCV001193805	Myriad Genetics, Inc.	criteria provided, single submitter (Myriad Women's Health Autosomal Recessive and X-Linked Classification Criteria (2019))	Likely pathogenic (Nov 12, 2019)	unknown	clinical testing	PubMed (2) [See all records that cite these PMIDs] 9003508, 1284466 Citation Link,
SCV001579747	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Pathogenic (Dec 19, 2019)	germline	clinical testing	PubMed (6) [See all records that cite these PMIDs] 1695717, 7691345, 9725922, 1284466, 27717243, 28492532
SCV004020653	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	criteria provided, single submitter (LabCorp Variant Classification Summary - May 2015)	Pathogenic (Jun 14, 2023)	germline	clinical testing	PubMed (5) [See all records that cite these PMIDs] 30888834, 27717243, 9147636, 34857524, 34315429 Citation Link

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	not provided	not provided	not provided	not provided	not provided	research
not provided	germline	not provided	not provided	not provided	not provided	not provided	not provided	literature only
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing
not provided	unknown	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Defining the disease liability of variants in the cystic fibrosis transmembrane conductance regulator gene.

Sosnay PR, Siklosi KR, Van Goor F, Kaniecki K, Yu H, Sharma N, Ramalho AS, Amaral MD, Dorfman R, Zielenski J, Masica DL, Karchin R, Millen L, Thomas PJ, Patrinos GP, Corey M, Lewis MH, Rommens JM, Castellani C, Penland CM, Cutting GR.

Nat Genet. 2013 Oct;45(10):1160-7. doi: 10.1038/ng.2745. Epub 2013 Aug 25.

PubMed [citation]

PMID:: 23974870
PMCID:: PMC3874936

Characterization of more than 85% of cystic fibrosis alleles in the Greek population, including five novel mutations.

Tzetis M, Kanavakis E, Antoniadi T, Doudounakis S, Adam G, Kattamis C.

Hum Genet. 1997 Jan;99(1):121-5.

PubMed [citation]

PMID:: 9003508

See all PubMed Citations (12)

Details of each submission

From OMIM, SCV000027772.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	literature only	PubMed (1)

Description

Using the chemical cleavage mismatch technique for the study of DNA from a patient with cystic fibrosis (CF; 219700), Jones et al. (1992) discovered a nonsense C524X mutation resulting from a C-to-A transversion.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	not provided	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From CFTR2 - CFTR2, SCV000245954.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	research	PubMed (1)

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	yes	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Myriad Genetics, Inc., SCV001193805.2

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (2)

Description

NM_000492.3(CFTR):c.1572C>A(C524*) is classified as likely pathogenic in the context of cystic fibrosis. Sources cited for classification include the following: PMID 9003508 and 1284466. Classification of NM_000492.3(CFTR):c.1572C>A(C524*) is based on the following criteria: The variant causes a premature termination codon that is expected to be targeted by nonsense-mediated mRNA decay and is observed in an individual with the relevant phenotype. Please note: this variant was assessed in the context of healthy population screening.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	unknown	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001579747.4

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (6)

Description

For these reasons, this variant has been classified as Pathogenic. Loss-of-function variants in CFTR are known to be pathogenic (PMID: 1695717, 7691345, 9725922). This variant has been observed in individual(s) with cystic fibrosis (PMID: 1284466, 27717243). ClinVar contains an entry for this variant (Variation ID: 7151). This variant is not present in population databases (ExAC no frequency). This sequence change creates a premature translational stop signal (p.Cys524*) in the CFTR gene. It is expected to result in an absent or disrupted protein product.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

From Women's Health and Genetics/Laboratory Corporation of America, LabCorp, SCV004020653.1

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (5)

Description

Variant summary: CFTR c.1572C>A (p.Cys524X) results in a premature termination codon, predicted to cause an absence of the protein due to nonsense mediated decay, which is a commonly known mechanism for disease. The variant allele was found at a frequency of 4e-06 in 250906 control chromosomes. c.1572C>A has been reported in the literature in individuals affected with Cystic Fibrosis (example, Shuber_1997, Zheng_2017, McCague_2019, Chen_2021, Bresnick_2021). These data indicate that the variant is likely to be associated with disease. The following publications have been ascertained in the context of this evaluation (PMID: 34857524, 34315429, 30888834, 9147636, 27717243). Multiple clinical diagnostic laboratories and a database (CFTR2) have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All submitters classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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