Variant chr6-30986378-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001010909.5(MUC21):c.203C>T(p.Thr68Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000745 in 1,610,482 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000069 ( 0 hom. )

Consequence

MUC21
NM_001010909.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.06

Variant links:

Genes affected

MUC21 (HGNC:21661): (mucin 21, cell surface associated) This gene encodes a large membrane-bound glycoprotein which is a member of the mucin family. Mucins are O-glycosylated proteins that play an essential role in forming protective mucous barriers on epithelial surfaces. These proteins also play a role in intracellular signaling. The encoded protein contains an N-terminal signal sequence, an extracellular mucin domain, a stem domain, a transmembrane domain, and a C-terminal cytoplasmic tail domain. The mucin domain contains O-glycosylation sites and is polymorphic with isoforms containing a variable number of nonidentical proline-, threonine-, and serine-rich tandem repeats of 15 amino acids each. The aberrent expression of this gene is associated with lung adenocarcinoma. [provided by RefSeq, May 2017]

MUC21 links:

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ACMG classification

Classification made for transcript

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=0.20533147).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
MUC21	NM_001010909.5 linkuse as main transcript	c.203C>T	p.Thr68Ile	missense_variant	2/3	ENST00000376296.3
MUC21	NR_130720.3 linkuse as main transcript	n.586C>T		non_coding_transcript_exon_variant	2/3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
MUC21	ENST00000376296.3 linkuse as main transcript	c.203C>T	p.Thr68Ile	missense_variant	2/3	1	NM_001010909.5	P1	Q5SSG8-1
MUC21	ENST00000486149.2 linkuse as main transcript	c.-1160C>T		5_prime_UTR_variant	2/3	1

Frequencies

GnomAD3 genomes

AF:

0.0000132

AC:

AN:

151228

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000295

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000795

AC:

AN:

251452

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135904

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000879

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000685

AC:

AN:

1459254

Hom.:

Cov.:

AF XY:

0.00000689

AC XY:

AN XY:

725996

show subpopulations

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:

0.00000811

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000132

AC:

AN:

151228

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

73874

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000295

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 20, 2024

The c.203C>T (p.T68I) alteration is located in exon 2 (coding exon 2) of the MUC21 gene. This alteration results from a C to T substitution at nucleotide position 203, causing the threonine (T) at amino acid position 68 to be replaced by an isoleucine (I). 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

0.14

BayesDel_addAF

Benign

-0.37

BayesDel_noAF

Benign

-0.59

CADD

Benign

7.4

DANN

Benign

0.92

DEOGEN2

Benign

0.0053

Eigen

Benign

-0.30

Eigen_PC

Benign

-0.52

FATHMM_MKL

Benign

0.065

LIST_S2

Benign

0.31

M_CAP

Benign

0.0070

MetaRNN

Benign

0.21

MetaSVM

Benign

-0.89

MutationAssessor

Benign

0.97

MutationTaster

Benign

0.58

D;N

PrimateAI

Benign

0.23

PROVEAN

Benign

-1.5

REVEL

Benign

0.077

Sift

Benign

0.089

Sift4G

Uncertain

0.0070

Polyphen

1.0

Vest4

0.28

MutPred

0.29

Gain of sheet (P = 0.0149);

MVP

0.095

MPC

0.15

ClinPred

0.19

GERP RS

1.9

Varity_R

0.046

gMVP

0.14

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over