Variant chr16-89646080-C-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_002768.5(CHMP1A):c.577G>C(p.Ala193Pro) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000718 in 1,392,330 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

CHMP1A
NM_002768.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.60

Variant links:

Genes affected

CHMP1A (HGNC:8740): (charged multivesicular body protein 1A) This gene encodes a member of the CHMP/Chmp family of proteins which are involved in multivesicular body sorting of proteins to the interiors of lysosomes. The initial prediction of the protein sequence encoded by this gene suggested that the encoded protein was a metallopeptidase. The nomenclature has been updated recently to reflect the correct biological function of this encoded protein. Several transcripts encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2012]

CHMP1A links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.34814718).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CHMP1A	NM_002768.5 linkuse as main transcript	c.577G>C	p.Ala193Pro	missense_variant	7/7	ENST00000397901.8	NP_002759.2
CHMP1A	NM_001083314.4 linkuse as main transcript	c.557G>C	p.Arg186Pro	missense_variant	6/6		NP_001076783.1
CHMP1A	XM_047434195.1 linkuse as main transcript	c.385G>C	p.Ala129Pro	missense_variant	7/7		XP_047290151.1
CHMP1A	NR_046418.3 linkuse as main transcript	n.865G>C		non_coding_transcript_exon_variant	7/7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CHMP1A	ENST00000397901.8 linkuse as main transcript	c.577G>C	p.Ala193Pro	missense_variant	7/7	1	NM_002768.5	ENSP00000380998	P1	Q9HD42-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.18e-7

AC:

AN:

1392330

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

685442

show subpopulations

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:

9.28e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 16, 2023

The c.557G>C (p.R186P) alteration is located in exon 6 (coding exon 6) of the CHMP1A gene. This alteration results from a G to C substitution at nucleotide position 557, causing the arginine (R) at amino acid position 186 to be replaced by a proline (P). 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

0.99

BayesDel_addAF

Pathogenic

0.23

BayesDel_noAF

Uncertain

0.090

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.35

T;.;.

Eigen

Uncertain

0.42

Eigen_PC

Uncertain

0.38

FATHMM_MKL

Benign

0.52

LIST_S2

Uncertain

0.93

D;D;D

M_CAP

Uncertain

0.28

MetaRNN

Benign

0.35

T;T;T

MetaSVM

Uncertain

-0.15

MutationAssessor

Pathogenic

3.0

M;.;.

MutationTaster

Benign

1.0

D;D;D;D

PrimateAI

Uncertain

0.63

PROVEAN

Uncertain

-3.5

D;D;D

REVEL

Uncertain

0.61

Sift

Benign

0.052

T;D;T

Sift4G

Benign

0.070

T;D;T

Polyphen

0.66

P;.;.

Vest4

0.18

MutPred

0.37

Loss of stability (P = 0.0281);.;.;

MVP

0.93

MPC

1.0

ClinPred

0.94

GERP RS

5.5

Varity_R

0.77

gMVP

0.80

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.060

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over