10-71356184-TG-CA

Position:

• chr10-71356184-TG-CA

Variant summary

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

The NM_018344.6(SLC29A3):​c.714_715inv​(p.Val239Ile) 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 Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. T238T) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: SLC29A3 NM_018344.6 missense
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1 B:3 O:1
• Conservation: PhyloP100: 0.160

Genes affected

SLC29A3 (HGNC:23096): (solute carrier family 29 member 3) This gene encodes a nucleoside transporter. The encoded protein plays a role in cellular uptake of nucleosides, nucleobases, and their related analogs. Mutations in this gene have been associated with H syndrome, which is characterized by cutaneous hyperpigmentation and hypertrichosis, hepatosplenomegaly, heart anomalies, and hypogonadism. A related disorder, PHID (pigmented hypertrichosis with insulin-dependent diabetes mellitus), has also been associated with mutations at this locus. Alternatively spliced transcript variants have been described.[provided by RefSeq, Mar 2010]

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP6: Variant 10-71356184-TG-CA is Benign according to our data. Variant chr10-71356184-TG-CA is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 300363.We mark this variant Likely_benign, oryginal submissions are: {not_provided=1, Uncertain_significance=1, Benign=3}.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
SLC29A3	NM_018344.6	c.714_715inv	p.Val239Ile	missense_variant	5/6	ENST00000373189.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
SLC29A3	ENST00000373189.6	c.714_715inv	p.Val239Ile	missense_variant	5/6	1	NM_018344.6	P1

Frequencies

GnomAD3 genomes Cov.: 32

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

GnomAD4 genome Cov.: 32

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:1 Benign:3 Other:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

H syndrome Uncertain:1 Benign:1

Benign, criteria provided, single submitter	clinical testing	Invitae	Feb 01, 2024	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jun 14, 2016	- -

not specified Benign:2

Benign, criteria provided, single submitter	clinical testing	Unidad de Genómica Garrahan, Hospital de Pediatría Garrahan	Nov 12, 2023	This variant is classified as Benign based on local population frequency. This variant was detected in 94% of patients studied by a panel of primary immunodeficiencies. Number of patients: 90. Only high quality variants are reported. -
Benign, criteria provided, single submitter	clinical testing	Pathology and Clinical Laboratory Medicine, King Fahad Medical City	-	- -

not provided Other:1

not provided, no classification provided

phenotyping only

GenomeConnect, ClinGen

-

Variant interpreted as Benign and reported on 04-27-2020 by Lab or GTR ID 500031. GenomeConnect assertions are reported exactly as they appear on the patient-provided report from the testing laboratory. GenomeConnect staff make no attempt to reinterpret the clinical significance of the variant. This variant was reported in an individual referred for clinical diagnostic genetic 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: rs34040486; hg19: chr10-73115941;