6-44229917-T-C

Position:

• chr6-44229917-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001372327.1(SLC29A1):​c.325T>C​(p.Ser109Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,050 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: SLC29A1 NM_001372327.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 0.229

Genes affected

SLC29A1 (HGNC:11003): (solute carrier family 29 member 1 (Augustine blood group)) This gene is a member of the equilibrative nucleoside transporter family. The gene encodes a transmembrane glycoprotein that localizes to the plasma and mitochondrial membranes and mediates the cellular uptake of nucleosides from the surrounding medium. The protein is categorized as an equilibrative (as opposed to concentrative) transporter that is sensitive to inhibition by nitrobenzylthioinosine (NBMPR). Nucleoside transporters are required for nucleotide synthesis in cells that lack de novo nucleoside synthesis pathways, and are also necessary for the uptake of cytotoxic nucleosides used for cancer and viral chemotherapies. Multiple alternatively spliced variants, encoding the same protein, have been found for this gene. [provided by RefSeq, Jul 2008]

POLR1C (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.31422466).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SLC29A1	NM_001372327.1	c.325T>C	p.Ser109Pro	missense_variant	5/13	ENST00000371755.9	NP_001359256.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SLC29A1	ENST00000371755.9	c.325T>C	p.Ser109Pro	missense_variant	5/13	1	NM_001372327.1	ENSP00000360820	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461050 Hom.: 0 Cov.: 35 AF XY: 0.00000275 AC XY: 2 AN XY: 726868

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000180

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Apr 20, 2024

The c.325T>C (p.S109P) alteration is located in exon 6 (coding exon 4) of the SLC29A1 gene. This alteration results from a T to C substitution at nucleotide position 325, causing the serine (S) at amino acid position 109 to be replaced by a proline (P). 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	Benign	0.087
BayesDel_addAF	Uncertain	0.018	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	17
DANN	Benign	0.97
DEOGEN2	Benign	0.34	T;T;.;T;T;.;.;.;T;.;.;.;T
Eigen	Benign	-0.45
Eigen_PC	Benign	-0.55
FATHMM_MKL	Benign	0.68	D
LIST_S2	Benign	0.47	T;.;.;.;.;T;T;T;.;T;T;T;.
M_CAP	Benign	0.071	D
MetaRNN	Benign	0.31	T;T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-0.80	T
MutationAssessor	Uncertain	2.0	M;M;.;M;M;.;.;.;M;.;.;.;M
MutationTaster	Benign	0.89	N;N;N;N;N;N;N;N;N;N
PrimateAI	Benign	0.36	T
PROVEAN	Benign	-2.0	N;N;.;N;N;N;N;N;N;.;.;.;N
REVEL	Uncertain	0.37
Sift	Benign	0.11	T;T;.;T;T;T;T;T;T;.;.;.;T
Sift4G	Benign	0.21	T;T;.;T;T;T;T;T;T;.;.;.;T
Polyphen		0.24	B;B;.;B;B;.;.;.;B;.;.;.;B
Vest4		0.39
MVP		0.41
MPC		0.38
ClinPred		0.14	T
GERP RS		-2.3
Varity_R		0.50

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: chr6-44197654;