Genetic Variant NM_001135197.2:c.1320C>T (chr3-49256817-C-T) – 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 NM_001135197.2(IHO1):c.1320C>T(p.Asp440Asp) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,882 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.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

IHO1
NM_001135197.2 synonymous

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.244

Publications

0 publications found

Variant links:

Genes affected

IHO1 (HGNC:27945): (interactor of HORMAD1 1) Predicted to be involved in gamete generation; meiosis I cell cycle process; and regulation of homologous chromosome segregation. Predicted to be active in condensed nuclear chromosome. [provided by Alliance of Genome Resources, Apr 2022]

IHO1 links:

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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=-0.75).

BP7

Synonymous conserved (PhyloP=0.244 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
IHO1	NM_001135197.2 link	c.1320C>T	p.Asp440Asp	synonymous_variant	Exon 8 of 8	ENST00000452691.7	NP_001128669.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
IHO1	ENST00000452691.7 link	c.1320C>T	p.Asp440Asp	synonymous_variant	Exon 8 of 8	2	NM_001135197.2	ENSP00000407837.2	Q8IYA8-1
IHO1	ENST00000296449.9 link	c.1320C>T	p.Asp440Asp	synonymous_variant	Exon 10 of 10	1		ENSP00000296449.5	Q8IYA8-1
IHO1	ENST00000438782.5 link	c.1320C>T	p.Asp440Asp	synonymous_variant	Exon 8 of 8	5		ENSP00000391788.1	Q8IYA8-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461882

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727244

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33478

American (AMR)

AF:

0.00

AC:

AN:

44724

Ashkenazi Jewish (ASJ)

AF:

0.0000383

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86258

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112008

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

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 v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.75

CADD

Benign

6.9

(source)

DANN

Benign

0.77

PhyloP100

0.24

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over