Genetic Variant ENST00000675028.1:c.746C>A (chr11-1078394-C-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The ENST00000675028.1(MUC2):c.746C>A(p.Ala249Asp) variant causes a missense change. The variant allele was found at a frequency of 0.000000711 in 1,405,902 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A249V) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 34)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

MUC2
ENST00000675028.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 4.88

Variant links:

Genes affected

MUC2 (HGNC:7512): (mucin 2, oligomeric mucus/gel-forming) This gene encodes a member of the mucin protein family. Mucins are high molecular weight glycoproteins produced by many epithelial tissues. The protein encoded by this gene is secreted and forms an insoluble mucous barrier that protects the gut lumen. The protein polymerizes into a gel of which 80% is composed of oligosaccharide side chains by weight. The protein features a central domain containing tandem repeats rich in threonine and proline that varies between 50 and 115 copies in different individuals. Downregulation of this gene has been observed in patients with Crohn disease and ulcerative colitis. [provided by RefSeq, Oct 2016]

MUC2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
MUC2	NM_002457.5 link	c.746C>A	p.Ala249Asp	missense_variant	Exon 6 of 58		NP_002448.5	Q02817A0A3S8TMF2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
MUC2	ENST00000675028.1 link	c.746C>A	p.Ala249Asp	missense_variant	Exon 6 of 30			ENSP00000502432.1		A0A6Q8PGX3
MUC2	ENST00000361558.7 link	n.773C>A		non_coding_transcript_exon_variant	Exon 6 of 49	5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.11e-7

AC:

AN:

1405902

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

695984

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:

0.0000123

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Uncertain

0.080

CADD

Benign

DANN

Uncertain

0.98

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

No publications associated with this variant yet.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

Other links and lift over