rs143382119

chr7-117559732-A-G

Variant summary

Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_000492.4(CFTR):c.1584+77A>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00313 in 980,178 control chromosomes in the GnomAD database, including 75 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.0014 (5 hom., cov: 32)
  • Exomes 𝑓: 0.0034 (70 hom.)
• Consequence: CFTR NM_000492.4 intron
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -1.76

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-AS1 (HGNC:):

ACMG classification

Verdict is Benign. Variant got -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BP6: Variant 7-117559732-A-G is Benign according to our data. Variant chr7-117559732-A-G is described in ClinVar as [Likely_benign]. Clinvar id is 439057.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr7-117559732-A-G is described in Lovd as [Benign].
• BS1: Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.00142 (216/152158) while in subpopulation SAS AF= 0.0425 (205/4828). AF 95% confidence interval is 0.0377. There are 5 homozygotes in gnomad4. There are 163 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd at 5 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CFTR	NM_000492.4	c.1584+77A>G		intron_variant		ENST00000003084.11
CFTR-AS1	NR_149084.1	n.221+1001T>C		intron_variant, non_coding_transcript_variant

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CFTR	ENST00000003084.11	c.1584+77A>G		intron_variant		1	NM_000492.4	P2

Frequencies

GnomAD3 genomes AF: 0.00142 AC: 216 AN: 152042 Hom.: 5 Cov.: 32

Gnomad AFR AF: 0.0000968

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.0000655

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.0424

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000588

Gnomad OTH AF: 0.000957

GnomAD4 exome AF: 0.00344 AC: 2849 AN: 828020 Hom.: 70 AF XY: 0.00494 AC XY: 2148 AN XY: 434654

Gnomad4 AFR exome AF: 0.0000480

Gnomad4 AMR exome AF: 0.0000260

Gnomad4 ASJ exome AF: 0.0000455

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0384

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.000108

Gnomad4 OTH exome AF: 0.00208

GnomAD4 genome AF: 0.00142 AC: 216 AN: 152158 Hom.: 5 Cov.: 32 AF XY: 0.00219 AC XY: 163 AN XY: 74408

Gnomad4 AFR AF: 0.0000965

Gnomad4 AMR AF: 0.0000654

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.0425

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000588

Gnomad4 OTH AF: 0.000947

Alfa AF: 0.000416 Hom.: 0

Bravo AF: 0.000268

Asia WGS AF: 0.0120 AC: 40 AN: 3476

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Quest Diagnostics Nichols Institute San Juan Capistrano

Apr 12, 2017

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
Cadd	Benign	0.033
Dann	Benign	0.36

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: rs143382119; hg19: chr7-117199786;