rs397508546
Variant summary
Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM1PM2PP3_Strong
The NM_000492.4(CFTR):c.3367G>C(p.Gly1123Arg) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000069 in 1,448,800 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 2/2 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as not provided (no stars).
Frequency
Genomes: not found (cov: 31)
Exomes 𝑓: 6.9e-7 ( 0 hom. )
Consequence
CFTR
NM_000492.4 missense, splice_region
NM_000492.4 missense, splice_region
Scores
4
8
6
Splicing: ADA: 1.000
2
Clinical Significance
Conservation
PhyloP100: 6.61
Genes affected
CFTR (HGNC:1884): (CF transmembrane conductance regulator) This gene encodes a member of the ATP-binding cassette (ABC) transporter superfamily. The encoded protein functions as a chloride channel, making it unique among members of this protein family, and controls ion and water secretion and absorption in epithelial tissues. Channel activation is mediated by cycles of regulatory domain phosphorylation, ATP-binding by the nucleotide-binding domains, and ATP hydrolysis. Mutations in this gene cause cystic fibrosis, the most common lethal genetic disorder in populations of Northern European descent. The most frequently occurring mutation in cystic fibrosis, DeltaF508, results in impaired folding and trafficking of the encoded protein. Multiple pseudogenes have been identified in the human genome. [provided by RefSeq, Aug 2017]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 8 ACMG points.
PM1
?
In a topological_domain Extracellular (size 13) in uniprot entity CFTR_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_000492.4
PM2
?
Very rare variant in population databases, with high coverage;
PP3
?
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF. No scorers claiming Uncertain. No scorers claiming Benign.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CFTR | NM_000492.4 | c.3367G>C | p.Gly1123Arg | missense_variant, splice_region_variant | 20/27 | ENST00000003084.11 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CFTR | ENST00000003084.11 | c.3367G>C | p.Gly1123Arg | missense_variant, splice_region_variant | 20/27 | 1 | NM_000492.4 | P2 | |
ENST00000456270.1 | n.177+4421C>G | intron_variant, non_coding_transcript_variant | 3 |
Frequencies
GnomAD3 genomes ? Cov.: 31
GnomAD3 genomes
?
Cov.:
31
GnomAD4 exome AF: 6.90e-7 AC: 1AN: 1448800Hom.: 0 Cov.: 28 AF XY: 0.00 AC XY: 0AN XY: 721506
GnomAD4 exome
AF:
AC:
1
AN:
1448800
Hom.:
Cov.:
28
AF XY:
AC XY:
0
AN XY:
721506
Gnomad4 AFR exome
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GnomAD4 genome ? Cov.: 31
GnomAD4 genome
?
Cov.:
31
ClinVar
Significance: not provided
Submissions summary: Other:1
Revision: no classification provided
LINK: link
Submissions by phenotype
Cystic fibrosis Other:1
not provided, no classification provided | literature only | ClinVar Staff, National Center for Biotechnology Information (NCBI) | - | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
Cadd
Pathogenic
Dann
Uncertain
DEOGEN2
Uncertain
D;.;.;T;.
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Pathogenic
D
LIST_S2
Uncertain
D;D;D;D;D
MetaRNN
Pathogenic
D;D;D;D;D
MetaSVM
Benign
T
MutationAssessor
Benign
L;.;.;.;.
MutationTaster
Benign
D;D
PrimateAI
Uncertain
T
PROVEAN
Benign
N;.;.;N;.
REVEL
Uncertain
Sift
Benign
D;.;.;D;.
Sift4G
Uncertain
D;.;.;D;.
Polyphen
B;.;.;.;.
Vest4
MutPred
Gain of methylation at G1123 (P = 0.0457);.;.;.;.;
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
dbscSNV1_RF
Pathogenic
SpliceAI score (max)
Details are displayed if max score is > 0.2
DS_DL_spliceai
Position offset: 0
Find out detailed SpliceAI scores and Pangolin per-transcript scores at