chr7-38728575-A-G

Position:

• chr7-38728575-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PM2 PM5 PP3_Strong

The NM_014396.4(VPS41):​c.2371T>C​(p.Cys791Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 12/21 in silico tools predict a damaging outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C791F) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: VPS41 NM_014396.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.95

Genes affected

VPS41 (HGNC:12713): (VPS41 subunit of HOPS complex) Vesicle mediated protein sorting plays an important role in segregation of intracellular molecules into distinct organelles. Genetic studies in yeast have identified more than 40 vacuolar protein sorting (VPS) genes involved in vesicle transport to vacuoles. This gene encodes the human ortholog of yeast Vps41 protein which is also conserved in Drosophila, tomato, and Arabidopsis. Expression studies in yeast and human indicate that this protein may be involved in the formation and fusion of transport vesicles from the Golgi. Several transcript variants encoding different isoforms have been described for this gene, however, the full-length nature of not all is known. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr7-38728574-C-A is described in ClinVar as [Pathogenic]. Clinvar id is 1175719.Status of the report is no_assertion_criteria_provided, 0 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.966

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
VPS41	NM_014396.4	c.2371T>C	p.Cys791Arg	missense_variant	27/29	ENST00000310301.9
VPS41	NM_080631.4	c.2296T>C	p.Cys766Arg	missense_variant	26/28
VPS41	XM_017011988.2	c.1216T>C	p.Cys406Arg	missense_variant	14/16
VPS41	XR_007060008.1	n.2388T>C		non_coding_transcript_exon_variant	27/29

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
VPS41	ENST00000310301.9	c.2371T>C	p.Cys791Arg	missense_variant	27/29	1	NM_014396.4	P1
VPS41	ENST00000448833.5	c.415T>C	p.Cys139Arg	missense_variant, NMD_transcript_variant	5/8	1
VPS41	ENST00000395969.6	c.2296T>C	p.Cys766Arg	missense_variant	26/28	5
VPS41	ENST00000482217.1	n.830T>C		non_coding_transcript_exon_variant	5/7	5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 06, 2023

The c.2371T>C (p.C791R) alteration is located in coding exon 27 of the VPS41 gene. This alteration results from a T to C substitution at nucleotide position 2371, causing the cysteine (C) at amino acid position 791 to be replaced by an arginine (R). This variant was not reported in population-based cohorts in the Genome Aggregation Database (gnomAD). Another alteration at the same codon, c.2372G>T (p.C791F), was reported homozygous in two siblings with features consistent with VPS41-related cerebellar ataxia (Sanderson, 2021). This amino acid position is highly conserved in available vertebrate species. This alteration is predicted to be deleterious by in silico analysis. 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	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.59	D
BayesDel_noAF	Pathogenic	0.61
CADD	Pathogenic	30
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.60	D;.
Eigen	Pathogenic	0.91
Eigen_PC	Pathogenic	0.87
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.91	D;D
M_CAP	Pathogenic	0.82	D
MetaRNN	Pathogenic	0.97	D;D
MetaSVM	Pathogenic	0.98	D
MutationAssessor	Pathogenic	3.4	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.79	T
PROVEAN	Pathogenic	-9.8	D;D
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;.
Vest4		0.99
MutPred		0.70		Loss of catalytic residue at S793 (P = 0.0242);.;
MVP		0.96
MPC		1.3
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.97
gMVP		0.95

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: chr7-38768175;