rs576710089
Variant summary
Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate
The NM_000492.4(CFTR):c.3592G>A(p.Val1198Met) variant causes a missense change. The variant allele was found at a frequency of 0.0000254 in 1,613,464 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Consequence
NM_000492.4 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 0 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
CFTR | NM_000492.4 | c.3592G>A | p.Val1198Met | missense_variant | Exon 22 of 27 | ENST00000003084.11 | NP_000483.3 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000789 AC: 12AN: 152128Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.0000200 AC: 5AN: 250442Hom.: 0 AF XY: 0.0000222 AC XY: 3AN XY: 135310
GnomAD4 exome AF: 0.0000198 AC: 29AN: 1461218Hom.: 0 Cov.: 32 AF XY: 0.0000138 AC XY: 10AN XY: 726898
GnomAD4 genome AF: 0.0000788 AC: 12AN: 152246Hom.: 0 Cov.: 32 AF XY: 0.000107 AC XY: 8AN XY: 74438
ClinVar
Submissions by phenotype
Cystic fibrosis Uncertain:2
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This sequence change replaces valine, which is neutral and non-polar, with methionine, which is neutral and non-polar, at codon 1198 of the CFTR protein (p.Val1198Met). This variant is present in population databases (rs576710089, gnomAD 0.01%). This missense change has been observed in individual(s) with clinical features of cystic fibrosis (PMID: 29997923). ClinVar contains an entry for this variant (Variation ID: 572626). Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
not provided Uncertain:2
The CFTR c.3592G>A (p.Val1198Met) variant has been reported in the published literature in individuals affected with cystic fibrosis (CF) (PMIDs: 25940953 (2015), 26795017 (2016), 28830496 (2017)), had positive newborn screening results (PMIDs: 23810505 (2013), 33572515 (2021)), or bronchiectasis (PMID: 29997923 (2018)). This variant occurred as part of a complex allele in a compound heterozygous CF patient whose tissue did not respond to pharmacologic modulators (PMID: 32747394 (2021)). The frequency of this variant in the general population, 0.00012 (3/24958 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -
The CFTR c.3592G>A; p.Val1198Met variant (rs576710089) is reported in the literature in a newborn screening cohort, but no specific clinical symptoms are provided (Prach 2013). This variant is reported in ClinVar (Variation ID: 572626), and is found in the African population with an allele frequency of 0.012% (3/24958 alleles) in the Genome Aggregation Database. The valine at codon 1198 is moderately conserved, and computational analyses (SIFT: damaging, PolyPhen-2: benign) predict conflicting effects of this variant on protein structure/function. Due to limited information, the clinical significance of the p.Val1198Met variant is uncertain at this time. References: Prach L et al. Novel CFTR variants identified during the first 3 years of cystic fibrosis newborn screening in California. J Mol Diagn. 2013 Sep;15(5):710-22. -
CFTR-related disorder Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at