Genetic Variant MCIDAS:p.Thr350Thr (chr5-55220474-G-A) – ACMG Classification: Likely_benign (-3 pts)

Variant summary

Our verdict is Likely benign. The variant received -3 ACMG points: 2P and 5B. PM2BP4_StrongBP7

The ENST00000513312.3(MCIDAS):c.1050C>T(p.Thr350Thr) 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 1,383,744 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. T350T) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

MCIDAS
ENST00000513312.3 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.141

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

ciliary dyskinesia, primary, 42
Inheritance: AR Classification: DEFINITIVE, STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, ClinGen, PanelApp Australia
primary ciliary dyskinesia
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

MCIDAS links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

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=-0.47).

BP7

Synonymous conserved (PhyloP=-0.141 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000513312.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	MCIDAS	NM_001190787.3	MANE Select	c.1050C>T	p.Thr350Thr	synonymous	Exon 7 of 7	NP_001177716.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein
MCIDAS	ENST00000513312.3	TSL:1 MANE Select	c.1050C>T	p.Thr350Thr	synonymous	Exon 7 of 7	ENSP00000426359.1
MCIDAS	ENST00000513468.5	TSL:5	n.*514C>T		non_coding_transcript_exon	Exon 7 of 7	ENSP00000422165.1
MCIDAS	ENST00000513468.5	TSL:5	n.*514C>T		3_prime_UTR	Exon 7 of 7	ENSP00000422165.1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000741

AC:

AN:

134956

AF XY:

0.0000136

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS 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:

7.23e-7

AC:

AN:

1383744

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

682808

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31592

American (AMR)

AF:

0.00

AC:

AN:

35700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25182

East Asian (EAS)

AF:

0.00

AC:

AN:

35734

South Asian (SAS)

AF:

0.0000126

AC:

AN:

79232

European-Finnish (FIN)

AF:

0.00

AC:

AN:

33910

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5620

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1078882

Other (OTH)

AF:

0.00

AC:

AN:

57892

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.47

CADD

Benign

9.1

(source)

DANN

Benign

0.91

PhyloP100

-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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over