chr17-7583790-A-T

Variant names:

• chr17-7583790-A-T
• rs2075230
• NM_001330073.1:c.-73A>T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_001330073.1(MPDU1):​c.-73A>T variant causes a 5 prime UTR 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.

• Frequency: Genomes: not found (cov: 34)
• Consequence: MPDU1 NM_001330073.1 5_prime_UTR
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.244

Genes affected

MPDU1 (HGNC:7207): (mannose-P-dolichol utilization defect 1) This gene encodes an endoplasmic reticulum membrane protein that is required for utilization of the mannose donor mannose-P-dolichol in the synthesis of lipid-linked oligosaccharides and glycosylphosphatidylinositols. Mutations in this gene result in congenital disorder of glycosylation type If. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Dec 2008]

ENSG00000233223 (HGNC:40379): (MPDU1 antisense RNA 1)

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.77).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MPDU1	NM_001330073.1	c.-73A>T		5_prime_UTR_variant	Exon 1 of 6		NP_001317002.1
MPDU1	XM_006721597.3	c.-73A>T		5_prime_UTR_variant	Exon 1 of 6		XP_006721660.1
MPDU1	XM_006721598.4	c.-73A>T		5_prime_UTR_variant	Exon 1 of 6		XP_006721661.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MPDU1	ENST00000582151	c.-73A>T		5_prime_UTR_variant	Exon 1 of 1			ENSP00000462500.1
MPDU1	ENST00000572936.5	n.-73A>T		non_coding_transcript_exon_variant	Exon 1 of 7	5		ENSP00000459306.1
MPDU1	ENST00000572936.5	n.-73A>T		5_prime_UTR_variant	Exon 1 of 7	5		ENSP00000459306.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 20

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.77
CADD	Benign	2.0
DANN	Benign	0.85

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

Publications

LitVar

Other links and lift over

dbSNP: rs2075230; hg19: chr17-7487108;