chr9-133663916-G-T

Variant names:

• chr9-133663916-G-T
• rs1829965903
• NM_001134707.2:c.2730C>A

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001134707.2(SARDH):​c.2730C>A​(p.Asn910Lys) variant causes a missense 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. 16/21 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: SARDH NM_001134707.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.802

Genes affected

SARDH (HGNC:10536): (sarcosine dehydrogenase) This gene encodes an enzyme localized to the mitochondrial matrix which catalyzes the oxidative demethylation of sarcosine. This enzyme is distinct from another mitochondrial matrix enzyme, dimethylglycine dehydrogenase, which catalyzes a reaction resulting in the formation of sarcosine. Mutations in this gene are associated with sarcosinemia. Alternatively spliced transcript variants have been described. [provided by RefSeq, Oct 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.11908612).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
SARDH	NM_001134707.2	c.2730C>A	p.Asn910Lys	missense_variant	Exon 21 of 21	ENST00000439388.6	NP_001128179.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
SARDH	ENST00000439388.6	c.2730C>A	p.Asn910Lys	missense_variant	Exon 21 of 21	2	NM_001134707.2	ENSP00000403084.1
SARDH	ENST00000371872.8	c.2730C>A	p.Asn910Lys	missense_variant	Exon 21 of 21	1		ENSP00000360938.4
SARDH	ENST00000371868.5	c.1080C>A	p.Asn360Lys	missense_variant	Exon 9 of 9	2		ENSP00000360934.1
SARDH	ENST00000469828.1	n.*56C>A		downstream_gene_variant		2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 6.84e-7 AC: 1 AN: 1461864 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 727228

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: 8.99e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.097
BayesDel_addAF	Benign	-0.12	T
BayesDel_noAF	Benign	-0.41
CADD	Benign	16
DANN	Benign	0.58
DEOGEN2	Benign	0.19	T;T;T
Eigen	Benign	-0.72
Eigen_PC	Benign	-0.49
FATHMM_MKL	Uncertain	0.81	D
LIST_S2	Benign	0.83	.;T;D
M_CAP	Benign	0.031	D
MetaRNN	Benign	0.12	T;T;T
MetaSVM	Benign	-0.84	T
MutationAssessor	Benign	-0.41	N;.;N
PrimateAI	Benign	0.40	T
PROVEAN	Benign	0.24	N;N;N
REVEL	Benign	0.17
Sift	Benign	0.76	T;T;T
Sift4G	Benign	1.0	T;T;T
Polyphen		0.0	B;B;B
Vest4		0.17
MutPred		0.30		Gain of methylation at N910 (P = 0.0262);.;Gain of methylation at N910 (P = 0.0262);
MVP		0.53
MPC		0.24
ClinPred		0.21	T
GERP RS		3.7
Varity_R		0.16
gMVP		0.52

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

LitVar

Other links and lift over

dbSNP: rs1829965903; hg19: chr9-136529038;