10-71362188-T-G

Variant names:

• chr10-71362188-T-G
• rs1084004
• NM_018344.6:c.1008T>G

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The NM_018344.6(SLC29A3):​c.1008T>G​(p.Gly336Gly) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. G336G) has been classified as Benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: SLC29A3 NM_018344.6 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.338
• Publications: 30 publications found

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]

SLC29A3 Gene-Disease associations (from GenCC):

• H syndrome

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Orphanet
• dysosteosclerosis

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.83).
• BP7: Synonymous conserved (PhyloP=0.338 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018344.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC29A3	NM_018344.6	MANE Select	c.1008T>G	p.Gly336Gly	synonymous	Exon 6 of 6	NP_060814.4
	SLC29A3	NM_001363518.2		c.774T>G	p.Gly258Gly	synonymous	Exon 6 of 6	NP_001350447.1
	SLC29A3	NR_033413.2		n.976T>G		non_coding_transcript_exon	Exon 5 of 5

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC29A3	ENST00000373189.6	TSL:1 MANE Select	c.1008T>G	p.Gly336Gly	synonymous	Exon 6 of 6	ENSP00000362285.5
	SLC29A3	ENST00000479577.2	TSL:2	c.774T>G	p.Gly258Gly	synonymous	Exon 6 of 6	ENSP00000493995.1
	SLC29A3	ENST00000469204.1	TSL:2	n.505T>G		non_coding_transcript_exon	Exon 3 of 3

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 82

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 201816

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.83
CADD	Benign	6.8
DANN	Benign	0.49
PhyloP100		0.34

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

Other links and lift over

dbSNP: rs1084004; hg19: chr10-73121945;