rs7116614

Positions:

• chr11-1234543-C-A
• chr11-1234543-C-T

Variant summary

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

The NM_002458.3(MUC5B):​c.2493C>A​(p.Cys831*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000007 in 1,428,048 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 7.0e-7 (0 hom.)
• Consequence: MUC5B NM_002458.3 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.659

Genes affected

MUC5B (HGNC:7516): (mucin 5B, oligomeric mucus/gel-forming) This gene encodes a member of the mucin family of proteins, which are highly glycosylated macromolecular components of mucus secretions. This family member is the major gel-forming mucin in mucus. It is a major contributor to the lubricating and viscoelastic properties of whole saliva, normal lung mucus and cervical mucus. This gene has been found to be up-regulated in some human diseases, including sinus mucosa of chronic rhinosinusitis (CRS), CRS with nasal polyposis, chronic obstructive pulmonary disease (COPD) and H. pylori-associated gastric disease, and it may be involved in the pathogenesis of these diseases. [provided by RefSeq, Jul 2010]

MUC5B (HGNC:):

ACMG classification

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/exons	MANE	Protein	UniProt
MUC5B	NM_002458.3	c.2493C>A	p.Cys831*	stop_gained	21/49	ENST00000529681.5	NP_002449.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
MUC5B	ENST00000529681.5	c.2493C>A	p.Cys831*	stop_gained	21/49	5	NM_002458.3	ENSP00000436812.1
MUC5B	ENST00000525715.5	n.2551C>A		non_coding_transcript_exon_variant	21/26	1

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 7.00e-7 AC: 1 AN: 1428048 Hom.: 0 Cov.: 49 AF XY: 0.00 AC XY: 0 AN XY: 707020

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.0000248

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: 0.00

GnomAD4 genome Cov.: 30

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Uncertain	25
DANN	Uncertain	0.99
Eigen	Benign	-0.46
Eigen_PC	Benign	-0.91
FATHMM_MKL	Benign	0.22	N
Vest4		0.87
GERP RS		-8.2

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		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: rs7116614; hg19: chr11-1255773;