rs214164

Positions:

• chr7-117652642-G-A

Variant summary

Our verdict is Benign. Variant got -20 ACMG points: 0P and 20B. BP4_Strong BP6_Very_Strong BA1

The NM_000492.4(CFTR):​c.3874-200G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.187 in 151,930 control chromosomes in the GnomAD database, including 2,847 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency: Genomes: 𝑓 0.19 (2847 hom., cov: 32)
• Consequence: CFTR NM_000492.4 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:3
• Conservation: PhyloP100: -2.55

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]

CFTR (HGNC:):

ACMG classification

Verdict is Benign. Variant got -20 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.93).
• BP6: Variant 7-117652642-G-A is Benign according to our data. Variant chr7-117652642-G-A is described in ClinVar as [Benign]. Clinvar id is 818097.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (NFE) allele frequency at 95% confidence interval = 0.2 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CFTR	NM_000492.4	c.3874-200G>A		intron_variant		ENST00000003084.11	NP_000483.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CFTR	ENST00000003084.11	c.3874-200G>A		intron_variant		1	NM_000492.4	ENSP00000003084.6

Frequencies

GnomAD3 genomes AF: 0.187 AC: 28390 AN: 151810 Hom.: 2844 Cov.: 32

Gnomad AFR AF: 0.188

Gnomad AMI AF: 0.151

Gnomad AMR AF: 0.158

Gnomad ASJ AF: 0.126

Gnomad EAS AF: 0.0141

Gnomad SAS AF: 0.189

Gnomad FIN AF: 0.232

Gnomad MID AF: 0.188

Gnomad NFE AF: 0.202

Gnomad OTH AF: 0.183

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.187 AC: 28410 AN: 151930 Hom.: 2847 Cov.: 32 AF XY: 0.187 AC XY: 13863 AN XY: 74232

Gnomad4 AFR AF: 0.189

Gnomad4 AMR AF: 0.158

Gnomad4 ASJ AF: 0.126

Gnomad4 EAS AF: 0.0139

Gnomad4 SAS AF: 0.188

Gnomad4 FIN AF: 0.232

Gnomad4 NFE AF: 0.202

Gnomad4 OTH AF: 0.181

Alfa AF: 0.207 Hom.: 507

Bravo AF: 0.178

Asia WGS AF: 0.106 AC: 367 AN: 3440

ClinVar

Significance: Benign

Submissions summary: Benign:3

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

not provided Benign:2

Benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 21, 2018	- -
Benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -

Cystic fibrosis Benign:1

Benign, criteria provided, single submitter

curation

CFTR-France

Jan 29, 2018

the variant does not result in CFTR-RD neither -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.93
CADD	Benign	0.0050
DANN	Benign	0.35

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs214164; hg19: chr7-117292696;