4-2931840-C-A

Variant names:

• chr4-2931840-C-A
• rs144214397
• NM_001146069.2:c.899G>T

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001146069.2(SLC75A1):​c.899G>T​(p.Arg300Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000000689 in 1,452,188 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R300H) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: SLC75A1 NM_001146069.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.00
• Publications: 0 publications found

Genes affected

SLC75A1 (HGNC:16894): (major facilitator superfamily domain containing 10) This gene encodes a member of the major facilitator superfamily of transporter proteins. The encoded protein likely functions in efflux of organic anions, including the non-steroidal anti-inflammatory drugs indomethacin and diclofenac. Alternatively spliced transcript variants have been described. [provided by RefSeq, Mar 2009]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.824

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001146069.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SLC75A1	NM_001146069.2	MANE Select	c.899G>T	p.Arg300Leu	missense	Exon 8 of 13	NP_001139541.1	Q14728
	SLC75A1	NM_001410703.1		c.899G>T	p.Arg300Leu	missense	Exon 8 of 12	NP_001397632.1	D6RE79
	SLC75A1	NM_001120.5		c.899G>T	p.Arg300Leu	missense	Exon 7 of 12	NP_001111.3

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MFSD10	ENST00000355443.9	TSL:1 MANE Select	c.899G>T	p.Arg300Leu	missense	Exon 8 of 13	ENSP00000347619.4	Q14728
	MFSD10	ENST00000329687.8	TSL:1	c.899G>T	p.Arg300Leu	missense	Exon 7 of 12	ENSP00000332646.4	Q14728
	MFSD10	ENST00000866678.1		c.1043G>T	p.Arg348Leu	missense	Exon 8 of 13	ENSP00000536737.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.89e-7 AC: 1 AN: 1452188 Hom.: 0 Cov.: 34 AF XY: 0.00000139 AC XY: 1 AN XY: 721528

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 33420

American (AMR) AF: 0.00 AC: 0 AN: 42660

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25854

East Asian (EAS) AF: 0.00 AC: 0 AN: 39394

South Asian (SAS) AF: 0.00 AC: 0 AN: 84612

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52528

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5758

European-Non Finnish (NFE) AF: 9.03e-7 AC: 1 AN: 1107846

Other (OTH) AF: 0.00 AC: 0 AN: 60116

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Uncertain	0.085	D
BayesDel_noAF	Benign	-0.12
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Benign	0.41	T
Eigen	Uncertain	0.38
Eigen_PC	Uncertain	0.41
FATHMM_MKL	Uncertain	0.80	D
LIST_S2	Uncertain	0.96	D
M_CAP	Benign	0.038	D
MetaRNN	Pathogenic	0.82	D
MetaSVM	Benign	-0.76	T
MutationAssessor	Benign	1.4	L
PhyloP100		4.0
PrimateAI	Uncertain	0.57	T
PROVEAN	Uncertain	-4.4	D
REVEL	Benign	0.26
Sift	Benign	0.23	T
Sift4G	Benign	0.071	T
Polyphen		0.82	P
Vest4		0.76
MutPred		0.72		Loss of methylation at R300 (P = 0.0359)
MVP		0.67
MPC		0.14
ClinPred		0.99	D
GERP RS		4.7
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.63
gMVP		0.79
Mutation Taster		=24/76	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs144214397; hg19: chr4-2933567; COSMIC: COSV108066136; COSMIC: COSV108066136;