rs1367687550

Variant names:

• chr20-50958913-T-A
• rs1367687550
• NM_014484.5:c.71T>A

Your query was ambiguous. Multiple possible variants found:

• chr20-50958913-T-A
• chr20-50958913-T-C

Variant summary

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

The NM_014484.5(MOCS3):​c.71T>A​(p.Leu24Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. 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. L24P) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: MOCS3 NM_014484.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 2.88

Genes affected

MOCS3 (HGNC:15765): (molybdenum cofactor synthesis 3) Molybdenum cofactor (MoCo) is necessary for the function of all molybdoenzymes. The protein encoded by this gene adenylates and activates molybdopterin synthase, an enzyme required for biosynthesis of MoCo. This gene contains no introns. A pseudogene of this gene is present on chromosome 14. [provided by RefSeq, Nov 2012]

DPM1 (HGNC:3005): (dolichyl-phosphate mannosyltransferase subunit 1, catalytic) Dolichol-phosphate mannose (Dol-P-Man) serves as a donor of mannosyl residues on the lumenal side of the endoplasmic reticulum (ER). Lack of Dol-P-Man results in defective surface expression of GPI-anchored proteins. Dol-P-Man is synthesized from GDP-mannose and dolichol-phosphate on the cytosolic side of the ER by the enzyme dolichyl-phosphate mannosyltransferase. Human DPM1 lacks a carboxy-terminal transmembrane domain and signal sequence and is regulated by DPM2. Mutations in this gene are associated with congenital disorder of glycosylation type Ie. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Nov 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MOCS3	NM_014484.5	c.71T>A	p.Leu24Gln	missense_variant	Exon 1 of 1	ENST00000244051.3	NP_055299.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MOCS3	ENST00000244051.3	c.71T>A	p.Leu24Gln	missense_variant	Exon 1 of 1	6	NM_014484.5	ENSP00000244051.1
DPM1	ENST00000683466.1	c.-327A>T		5_prime_UTR_premature_start_codon_gain_variant	Exon 1 of 8			ENSP00000507404.1
DPM1	ENST00000683466.1	c.-327A>T		5_prime_UTR_variant	Exon 1 of 8			ENSP00000507404.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.21
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.050
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.37	T
Eigen	Benign	0.037
Eigen_PC	Benign	-0.14
FATHMM_MKL	Benign	0.20	N
LIST_S2	Benign	0.76	T
M_CAP	Uncertain	0.22	D
MetaRNN	Uncertain	0.60	D
MetaSVM	Benign	-0.47	T
MutationAssessor	Pathogenic	3.2	M
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-1.4	N
REVEL	Uncertain	0.41
Sift	Uncertain	0.013	D
Sift4G	Uncertain	0.041	D
Polyphen		0.99	D
Vest4		0.46
MutPred		0.22		Loss of stability (P = 0.0095);
MVP		0.93
MPC		1.3
ClinPred		0.96	D
GERP RS		3.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.39
gMVP		0.78

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: rs1367687550; hg19: chr20-49575450;