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GeneBe

6-30986573-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001010909.5(MUC21):​c.398G>A​(p.Ser133Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S133G) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000027 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000035 ( 0 hom. )
Failed GnomAD Quality Control

Consequence

MUC21
NM_001010909.5 missense

Scores

1
18

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.48
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]

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.057054013).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
MUC21NM_001010909.5 linkuse as main transcriptc.398G>A p.Ser133Asn missense_variant 2/3 ENST00000376296.3
MUC21NR_130720.3 linkuse as main transcriptn.781G>A non_coding_transcript_exon_variant 2/3

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
MUC21ENST00000376296.3 linkuse as main transcriptc.398G>A p.Ser133Asn missense_variant 2/31 NM_001010909.5 P1Q5SSG8-1
MUC21ENST00000486149.2 linkuse as main transcriptc.-965G>A 5_prime_UTR_variant 2/31

Frequencies

GnomAD3 genomes
AF:
0.00
AC:
4
AN:
150512
Hom.:
0
Cov.:
33
FAILED QC
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000661
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:
0.0000444
Gnomad OTH
AF:
0.00
GnomAD4 exome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.00000351
AC:
5
AN:
1424730
Hom.:
0
Cov.:
171
AF XY:
0.00000282
AC XY:
2
AN XY:
708340
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:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000367
Gnomad4 OTH exome
AF:
0.0000173
GnomAD4 genome
Data not reliable, filtered out with message: AS_VQSR
AF:
0.0000266
AC:
4
AN:
150614
Hom.:
0
Cov.:
33
AF XY:
0.0000136
AC XY:
1
AN XY:
73578
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000660
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000444
Gnomad4 OTH
AF:
0.00

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Benign
-0.29
T
BayesDel_noAF
Benign
-0.66
CADD
Benign
4.6
DANN
Benign
0.80
DEOGEN2
Benign
0.0097
T
Eigen
Benign
-1.2
Eigen_PC
Benign
-1.2
FATHMM_MKL
Benign
0.049
N
LIST_S2
Benign
0.42
T
M_CAP
Benign
0.0054
T
MetaRNN
Benign
0.057
T
MetaSVM
Benign
-0.92
T
MutationAssessor
Benign
1.9
L
MutationTaster
Benign
1.0
N;N
PrimateAI
Benign
0.22
T
PROVEAN
Benign
-0.82
N
REVEL
Benign
0.010
Sift
Uncertain
0.011
D
Sift4G
Benign
0.12
T
Polyphen
0.033
B
Vest4
0.030
MutPred
0.19
Loss of phosphorylation at S133 (P = 0.0028);
MVP
0.014
MPC
0.13
ClinPred
0.041
T
GERP RS
0.39
Varity_R
0.18
gMVP
0.022

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.

Other links and lift over

dbSNP: rs1465364390; hg19: chr6-30954350; COSMIC: COSV105303563; API