rs4148700

Variant names:

• chr7-117536514-AGATTGATT-A
• rs1805171
• NM_000492.4:c.744-13_744-6delGATTGATT

Your query was ambiguous. Multiple possible variants found:

• chr7-117536514-AGATTGATT-A
• chr7-117536514-AGATT-A
• chr7-117536514-A-AGATTGATT
• chr7-117536514-A-AGATT
• chr7-117536514-AGATTGATTGATT-A

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP6

The NM_000492.4(CFTR):​c.744-13_744-6delGATTGATT variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000539 in 1,540,798 control chromosomes in the GnomAD database, including 1 homozygotes. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00011 (0 hom., cov: 25)
  • Exomes 𝑓: 0.000048 (1 hom.)
• Consequence: CFTR NM_000492.4 splice_region, intron
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:2
• Conservation: PhyloP100: 1.82

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 7-117536514-AGATTGATT-A is Benign according to our data. Variant chr7-117536514-AGATTGATT-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 439476.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CFTR	NM_000492.4	c.744-13_744-6delGATTGATT		splice_region_variant, intron_variant	Intron 6 of 26	ENST00000003084.11	NP_000483.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CFTR	ENST00000003084.11	c.744-33_744-26delGATTGATT		intron_variant	Intron 6 of 26	1	NM_000492.4	ENSP00000003084.6

Frequencies

GnomAD3 genomes AF: 0.000112 AC: 17 AN: 151648 Hom.: 0 Cov.: 25

Gnomad AFR AF: 0.000121

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000527

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000589

Gnomad OTH AF: 0.00

GnomAD3 exomes AF: 0.0000918 AC: 15 AN: 163440 Hom.: 1 AF XY: 0.0000805 AC XY: 7 AN XY: 86906

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.000395

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000419

Gnomad FIN exome AF: 0.0000793

Gnomad NFE exome AF: 0.0000456

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000475 AC: 66 AN: 1389032 Hom.: 1 AF XY: 0.0000509 AC XY: 35 AN XY: 687076

Gnomad4 AFR exome AF: 0.0000627

Gnomad4 AMR exome AF: 0.000304

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000375

Gnomad4 FIN exome AF: 0.0000900

Gnomad4 NFE exome AF: 0.0000392

Gnomad4 OTH exome AF: 0.0000693

GnomAD4 genome AF: 0.000112 AC: 17 AN: 151766 Hom.: 0 Cov.: 25 AF XY: 0.000148 AC XY: 11 AN XY: 74148

Gnomad4 AFR AF: 0.000121

Gnomad4 AMR AF: 0.000527

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000589

Gnomad4 OTH AF: 0.00

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:2

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Cystic fibrosis Uncertain:1 Benign:1

Jul 01, 2015

Ambry Genetics

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

Feb 10, 2017

Counsyl

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

not specified Benign:1

Oct 31, 2016

ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs1805171; hg19: chr7-117176568;