17-8189375-T-G

Variant names:

• chr17-8189375-T-G
• NM_017622.3:c.766A>C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_017622.3(BORCS6):​c.766A>C​(p.Ile256Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: BORCS6 NM_017622.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.15

Genes affected

BORCS6 (HGNC:25939): (BLOC-1 related complex subunit 6) Enables identical protein binding activity. Involved in lysosome localization. Part of BORC complex. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000279152 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BORCS6	NM_017622.3	c.766A>C	p.Ile256Leu	missense_variant	Exon 1 of 1	ENST00000389017.6	NP_060092.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BORCS6	ENST00000389017.6	c.766A>C	p.Ile256Leu	missense_variant	Exon 1 of 1	6	NM_017622.3	ENSP00000373669.4
ENSG00000279152	ENST00000622992.1	n.443T>G		non_coding_transcript_exon_variant	Exon 1 of 1	6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Mar 24, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.766A>C (p.I256L) alteration is located in exon 1 (coding exon 1) of the BORCS6 gene. This alteration results from a A to C substitution at nucleotide position 766, causing the isoleucine (I) at amino acid position 256 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.61
BayesDel_addAF	Uncertain	0.093	D
BayesDel_noAF	Benign	-0.10
CADD	Uncertain	24
DANN	Uncertain	0.99
DEOGEN2	Benign	0.042	T
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.76	T
M_CAP	Benign	0.023	T
MetaRNN	Uncertain	0.47	T
MetaSVM	Benign	-0.67	T
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.19
Sift	Benign	0.13	T
Sift4G	Uncertain	0.045	D
Polyphen		1.0	D
Vest4		0.55
MutPred		0.61		Gain of catalytic residue at I256 (P = 0.0029);
MVP		0.061
ClinPred		0.87	D
GERP RS		5.5
Varity_R		0.29
gMVP		0.64

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr17-8092693;