chr16-1445006-AACC-A

Position:

• chr16-1445006-AACC-A

Variant summary

Our verdict is Benign. Variant got -10 ACMG points: 0P and 10B. BP6_Moderate BS1 BS2

The NM_001287.6(CLCN7):​c.*1622_*1624del variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0111 in 152,312 control chromosomes in the GnomAD database, including 26 homozygotes. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: 𝑓 0.011 (26 hom., cov: 33)
  • Exomes 𝑓: 0.0 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: CLCN7 NM_001287.6 3_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.140

Genes affected

CLCN7 (HGNC:2025): (chloride voltage-gated channel 7) The product of this gene belongs to the CLC chloride channel family of proteins. Chloride channels play important roles in the plasma membrane and in intracellular organelles. This gene encodes chloride channel 7. Defects in this gene are the cause of osteopetrosis autosomal recessive type 4 (OPTB4), also called infantile malignant osteopetrosis type 2 as well as the cause of autosomal dominant osteopetrosis type 2 (OPTA2), also called autosomal dominant Albers-Schonberg disease or marble disease autosoml dominant. Osteopetrosis is a rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. OPTA2 is the most common form of osteopetrosis, occurring in adolescence or adulthood. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Benign. Variant got -10 ACMG points.

• BP6: Variant 16-1445006-AACC-A is Benign according to our data. Variant chr16-1445006-AACC-A is described in ClinVar as [Likely_benign]. Clinvar id is 317905.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.0111 (1697/152312) while in subpopulation AFR AF= 0.0388 (1610/41544). AF 95% confidence interval is 0.0372. There are 26 homozygotes in gnomad4. There are 791 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
• BS2: High Homozygotes in GnomAd4 at 26 SD gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CLCN7	NM_001287.6	c.*1622_*1624del		3_prime_UTR_variant	25/25	ENST00000382745.9
CLCN7	NM_001114331.3	c.*1622_*1624del		3_prime_UTR_variant	24/24
CLCN7	XM_011522354.2	c.*1622_*1624del		3_prime_UTR_variant	25/25

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CLCN7	ENST00000382745.9	c.*1622_*1624del		3_prime_UTR_variant	25/25	1	NM_001287.6	P1
CLCN7	ENST00000563642.6	n.4109_4111del		non_coding_transcript_exon_variant	9/9	2

Frequencies

GnomAD3 genomes AF: 0.0111 AC: 1689 AN: 152194 Hom.: 26 Cov.: 33

Gnomad AFR AF: 0.0387

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00327

Gnomad ASJ AF: 0.00173

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00316

Gnomad NFE AF: 0.000162

Gnomad OTH AF: 0.00860

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 50 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 30

Gnomad4 AFR exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome AF: 0.0111 AC: 1697 AN: 152312 Hom.: 26 Cov.: 33 AF XY: 0.0106 AC XY: 791 AN XY: 74486

Gnomad4 AFR AF: 0.0388

Gnomad4 AMR AF: 0.00327

Gnomad4 ASJ AF: 0.00173

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.000207

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.000162

Gnomad4 OTH AF: 0.00851

Alfa AF: 0.00840 Hom.: 1

Bravo AF: 0.0127

Asia WGS AF: 0.00231 AC: 8 AN: 3478

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

Osteopetrosis Benign:1

Likely benign, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Computational scores

Source: dbNSFP v4.3

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: rs143409179; hg19: chr16-1495007;