ENST00000675028.1:c.861C>A

Variant names:

• chr11-1078509-C-A
• rs375279233
• NM_002457.5:c.861C>A

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2 BP4_Strong BP7

The ENST00000675028.1(MUC2):​c.861C>A​(p.Thr287Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000723 in 1,382,534 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. T287T) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 34)
  • Exomes 𝑓: 7.2e-7 (0 hom.)
• Consequence: MUC2 ENST00000675028.1 synonymous
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -4.85
• Publications: 0 publications found

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]

ACMG classification

Our verdict: Likely_benign. The variant received -3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.75).
• BP7: Synonymous conserved (PhyloP=-4.85 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000675028.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MUC2	NM_002457.5	MANE Select	c.861C>A	p.Thr287Thr	synonymous	Exon 6 of 58	NP_002448.5	A0A3S8TMF2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MUC2	ENST00000675028.1		c.861C>A	p.Thr287Thr	synonymous	Exon 6 of 30	ENSP00000502432.1	A0A6Q8PGX3
	MUC2	ENST00000361558.7	TSL:5	n.888C>A		non_coding_transcript_exon	Exon 6 of 49

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome AF: 7.23e-7 AC: 1 AN: 1382534 Hom.: 0 Cov.: 37 AF XY: 0.00000147 AC XY: 1 AN XY: 682378

African (AFR) AF: 0.00 AC: 0 AN: 31656

American (AMR) AF: 0.00 AC: 0 AN: 36038

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24860

East Asian (EAS) AF: 0.00 AC: 0 AN: 36092

South Asian (SAS) AF: 0.00 AC: 0 AN: 78812

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33638

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4412

European-Non Finnish (NFE) AF: 9.26e-7 AC: 1 AN: 1079340

Other (OTH) AF: 0.00 AC: 0 AN: 57686

GnomAD4 genome Cov.: 34

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.75
CADD	Benign	0.32
DANN	Benign	0.73
PhyloP100		-4.9

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

Other links and lift over

dbSNP: rs375279233; hg19: chr11-1078653;