6-31026132-G-T

Position:

• chr6-31026132-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_001395414.1(MUC22):​c.701G>T​(p.Gly234Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000217 in 1,380,554 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000022 (0 hom.)
• Consequence: MUC22 NM_001395414.1 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -3.07

Genes affected

MUC22 (HGNC:39755): (mucin 22) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.09382859).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MUC22	NM_001395414.1	c.701G>T	p.Gly234Val	missense_variant	2/4	ENST00000561890.1
MUC22	NM_001318484.1	c.710G>T	p.Gly237Val	missense_variant	3/5
MUC22	NM_001198815.1	c.701G>T	p.Gly234Val	missense_variant	3/5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MUC22	ENST00000561890.1	c.701G>T	p.Gly234Val	missense_variant	2/4	2	NM_001395414.1	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.0000155 AC: 2 AN: 129112 Hom.: 0 AF XY: 0.0000284 AC XY: 2 AN XY: 70500

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS exome AF: 0.0000893

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000217 AC: 3 AN: 1380554 Hom.: 0 Cov.: 89 AF XY: 0.00000294 AC XY: 2 AN XY: 681238

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: 0.0000379

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ExAC AF: 0.0000480 AC: 1

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

May 20, 2024

The c.701G>T (p.G234V) alteration is located in exon 3 (coding exon 2) of the MUC22 gene. This alteration results from a G to T substitution at nucleotide position 701, causing the glycine (G) at amino acid position 234 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	0.16
BayesDel_addAF	Benign	-0.52	T
BayesDel_noAF	Benign	-0.79
CADD	Benign	0.53
DANN	Benign	0.42
DEOGEN2	Benign	0.0034	T
FATHMM_MKL	Benign	0.0054	N
LIST_S2	Benign	0.66	T
M_CAP	Benign	0.0074	T
MetaRNN	Benign	0.094	T
MutationAssessor	Benign	0.34	N
MutationTaster	Benign	1.0	N
PrimateAI	Benign	0.17	T
PROVEAN	Benign	-1.6	N
Sift	Uncertain	0.029	D
Sift4G	Benign	0.099	T
Vest4		0.068
MVP		0.38
GERP RS		-3.5
Varity_R		0.053
gMVP		0.046

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: rs780062791; hg19: chr6-30993909;