Genetic Variant NCAPH:c.20-3delC (chr2-96341637-TC-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 1P and 0B. PP3

The NM_015341.5(NCAPH):c.20-3delC variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000341 in 1,607,986 control chromosomes in the GnomAD database, including 1 homozygotes. 1/1 splice prediction tools predicting alterations to normal splicing. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00037 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00034 ( 1 hom. )

Consequence

NCAPH
NM_015341.5 splice_region, intron

Scores

Not classified

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.411

Publications

0 publications found

Variant links:

Genes affected

NCAPH (HGNC:1112): (non-SMC condensin I complex subunit H) This gene encodes a member of the barr gene family and a regulatory subunit of the condensin complex. This complex is required for the conversion of interphase chromatin into condensed chromosomes. The protein encoded by this gene is associated with mitotic chromosomes, except during the early phase of chromosome condensation. During interphase, the protein has a distinct punctate nucleolar localization. Alternatively spliced transcript variants encoding different proteins have been described. [provided by RefSeq, Jul 2013]

NCAPH Gene-Disease associations (from GenCC):

microcephaly 23, primary, autosomal recessive
Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), G2P

NCAPH links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PP3

Splicing predictors support a deleterious effect. Scorers claiming Pathogenic: max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015341.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
NCAPH	NM_015341.5	MANE Select	c.20-3delC	splice_region intron	N/A	NP_056156.2
NCAPH	NM_001281710.2		c.20-36delC	intron	N/A	NP_001268639.1
NCAPH	NM_001281711.2		c.20-75delC	intron	N/A	NP_001268640.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein	UniProt
NCAPH	ENST00000240423.9	TSL:1 MANE Select	c.20-3delC	splice_region intron	N/A	ENSP00000240423.4	Q15003-1
NCAPH	ENST00000435975.5	TSL:1	c.20-36delC	intron	N/A	ENSP00000405237.1	C9J470
NCAPH	ENST00000477409.1	TSL:1	n.49-75delC	intron	N/A

Frequencies

GnomAD3 genomes

AF:

0.000368

AC:

AN:

152148

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:

0.000961

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00367

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000147

Gnomad OTH

AF:

0.000478

GnomAD2 exomes

AF:

0.000648

AC:

161

AN:

248612

AF XY:

0.000639

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000764

Gnomad FIN exome

AF:

0.00395

Gnomad NFE exome

AF:

0.000517

Gnomad OTH exome

AF:

0.000495

GnomAD4 exome

AF:

0.000337

AC:

491

AN:

1455720

Hom.:

Cov.:

AF XY:

0.000313

AC XY:

226

AN XY:

723126

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33252

American (AMR)

AF:

0.00

AC:

AN:

44210

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25942

East Asian (EAS)

AF:

0.00311

AC:

123

AN:

39562

South Asian (SAS)

AF:

0.0000116

AC:

AN:

85946

European-Finnish (FIN)

AF:

0.00353

AC:

188

AN:

53314

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5738

European-Non Finnish (NFE)

AF:

0.000147

AC:

163

AN:

1107674

Other (OTH)

AF:

0.000266

AC:

AN:

60082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

114

142

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

AF:

0.000374

AC:

AN:

152266

Hom.:

Cov.:

AF XY:

0.000510

AC XY:

AN XY:

74454

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41548

American (AMR)

AF:

0.00

AC:

AN:

15294

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00116

AC:

AN:

5190

South Asian (SAS)

AF:

0.000208

AC:

AN:

4818

European-Finnish (FIN)

AF:

0.00367

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000147

AC:

AN:

68016

Other (OTH)

AF:

0.000473

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.522

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome 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

Alfa

AF:

0.000216

Hom.:

Bravo

AF:

0.0000491

EpiCase

AF:

0.00

EpiControl

AF:

0.000237

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

PhyloP100

0.41

Mutation Taster

=74/26

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.69

Details are displayed if max score is > 0.2

DS_AL_spliceai

0.69

Position offset: 5

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over