Genetic Variant MCIDAS:p.Thr373Ala (chr5-55220407-T-C) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_001190787.3(MCIDAS):c.1117A>G(p.Thr373Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000195 in 1,535,858 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

MCIDAS
NM_001190787.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.67

Variant links:

Genes affected

MCIDAS (HGNC:40050): (multiciliate differentiation and DNA synthesis associated cell cycle protein) This gene encodes a member of the geminin family of proteins. The encoded nuclear protein is required for the generation of multiciliated cells in respiratory epithelium. Mutations in this gene cause a rare mucociliary clearance disorder associated with recurring respiratory infections in human patients, known as reduced generation of multiple motile cilia (RGMC). [provided by RefSeq, Sep 2016]

MCIDAS links:

Genome browser will be placed here

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
MCIDAS	NM_001190787.3 link	c.1117A>G	p.Thr373Ala	missense_variant	Exon 7 of 7	ENST00000513312.3	NP_001177716.1	D6RGH6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
MCIDAS	ENST00000513312.3 link	c.1117A>G	p.Thr373Ala	missense_variant	Exon 7 of 7	1	NM_001190787.3	ENSP00000426359.1	D6RGH6
MCIDAS	ENST00000513468.5 link	n.*581A>G		non_coding_transcript_exon_variant	Exon 7 of 7	5		ENSP00000422165.1	I6L8E2
MCIDAS	ENST00000513468.5 link	n.*581A>G		3_prime_UTR_variant	Exon 7 of 7	5		ENSP00000422165.1	I6L8E2

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152146

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000743

AC:

AN:

134630

Hom.:

AF XY:

0.00

AC XY:

AN XY:

73268

show subpopulations

Gnomad AFR exome

AF:

0.000155

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000145

AC:

AN:

1383712

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

682782

show subpopulations

Gnomad4 AFR exome

AF:

0.0000633

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152146

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74326

show subpopulations

Gnomad4 AFR

AF:

0.0000241

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:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000151

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Dec 19, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1117A>G (p.T373A) alteration is located in exon 7 (coding exon 7) of the MCIDAS gene. This alteration results from a A to G substitution at nucleotide position 1117, causing the threonine (T) at amino acid position 373 to be replaced by an alanine (A). 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

Uncertain

0.40

BayesDel_addAF

Benign

-0.069

BayesDel_noAF

Uncertain

-0.080

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.096

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.51

FATHMM_MKL

Uncertain

0.88

LIST_S2

Benign

0.68

M_CAP

Benign

0.022

MetaRNN

Uncertain

0.56

MetaSVM

Benign

-0.59

MutationAssessor

Uncertain

2.1

PrimateAI

Uncertain

0.52

PROVEAN

Benign

-1.5

REVEL

Benign

0.10

Sift

Uncertain

0.0090

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.65

MutPred

0.32

Loss of sheet (P = 0.0126);

MVP

0.072

ClinPred

0.46

GERP RS

4.9

Varity_R

0.14

gMVP

0.77

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