4-48998462-G-T

Position:

• chr4-48998462-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_025087.3(CWH43):​c.716G>T​(p.Gly239Val) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.00000137 in 1,459,812 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 1/1 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: CWH43 NM_025087.3 missense, splice_region
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.71

Genes affected

CWH43 (HGNC:26133): (cell wall biogenesis 43 C-terminal homolog) Predicted to be involved in GPI anchor biosynthetic process. Predicted to be integral component of membrane. Predicted to be active in endoplasmic reticulum. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.819

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CWH43	NM_025087.3	c.716G>T	p.Gly239Val	missense_variant, splice_region_variant	6/16	ENST00000226432.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CWH43	ENST00000226432.9	c.716G>T	p.Gly239Val	missense_variant, splice_region_variant	6/16	1	NM_025087.3	P1
CWH43	ENST00000513409.1	c.635G>T	p.Gly212Val	missense_variant, splice_region_variant	6/16	2
CWH43	ENST00000514053.6	c.*3638G>T		intron_variant, NMD_transcript_variant		5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1459812 Hom.: 0 Cov.: 29 AF XY: 0.00000138 AC XY: 1 AN XY: 726422

Gnomad4 AFR exome AF: 0.0000299

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: 0.00

Gnomad4 OTH exome AF: 0.0000166

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 17, 2024

The c.716G>T (p.G239V) alteration is located in exon 6 (coding exon 6) of the CWH43 gene. This alteration results from a G to T substitution at nucleotide position 716, causing the glycine (G) at amino acid position 239 to be replaced by a valine (V). 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	Benign	0.22
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.030
CADD	Uncertain	25
DANN	Uncertain	0.99
DEOGEN2	Benign	0.0080	T;.
Eigen	Uncertain	0.61
Eigen_PC	Uncertain	0.53
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Benign	0.83	T;T
M_CAP	Benign	0.040	D
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Benign	-0.73	T
MutationAssessor	Uncertain	2.6	M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-1.3	N;N
REVEL	Benign	0.22
Sift	Benign	0.33	T;T
Sift4G	Uncertain	0.010	D;D
Polyphen		1.0	D;.
Vest4		0.92
MutPred		0.53		Loss of disorder (P = 0.0568);.;
MVP		0.46
MPC		0.26
ClinPred		0.97	D
GERP RS		4.2
Varity_R		0.25
gMVP		0.90

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr4-49000479;