rs368942099

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 2P and 11B. PM2BP4_ModerateBP6_Very_StrongBP7

The NM_001134831.2(AHI1):c.2490G>A(p.Arg830=) variant causes a splice region, synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000278 in 1,519,080 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0015 ( 1 hom., cov: 32)

Exomes 𝑓: 0.00014 ( 0 hom. )

Consequence

AHI1
NM_001134831.2 splice_region, synonymous

Scores

Splicing: ADA: 0.00003559

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:4

Conservation

PhyloP100: 1.08

Variant links:

Genes affected

AHI1 (HGNC:21575): (Abelson helper integration site 1) This gene is apparently required for both cerebellar and cortical development in humans. This gene mutations cause specific forms of Joubert syndrome-related disorders. Joubert syndrome (JS) is a recessively inherited developmental brain disorder with several identified causative chromosomal loci. Alternatively spliced transcript variants encoding different isoforms have been identified. [provided by RefSeq, Oct 2008]

AHI1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.41).

BP6

Variant 6-135429884-C-T is Benign according to our data. Variant chr6-135429884-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 260847.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=1.08 with no splicing effect.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
AHI1	NM_001134831.2 linkuse as main transcript	c.2490G>A	p.Arg830=	splice_region_variant, synonymous_variant	18/29	ENST00000265602.11

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
AHI1	ENST00000265602.11 linkuse as main transcript	c.2490G>A	p.Arg830=	splice_region_variant, synonymous_variant	18/29	1	NM_001134831.2	P2	Q8N157-1

Frequencies

GnomAD3 genomes

AF:

0.00150

AC:

227

AN:

151726

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00527

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000263

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:

0.0000443

Gnomad OTH

AF:

0.000958

GnomAD3 exomes

AF:

0.000424

AC:

AN:

205394

Hom.:

AF XY:

0.000346

AC XY:

AN XY:

109906

show subpopulations

Gnomad AFR exome

AF:

0.00525

Gnomad AMR exome

AF:

0.000473

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:

0.0000342

Gnomad OTH exome

AF:

0.000188

GnomAD4 exome

AF:

0.000142

AC:

194

AN:

1367236

Hom.:

Cov.:

AF XY:

0.000131

AC XY:

AN XY:

679810

show subpopulations

Gnomad4 AFR exome

AF:

0.00470

Gnomad4 AMR exome

AF:

0.000473

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000127

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000481

Gnomad4 OTH exome

AF:

0.000332

GnomAD4 genome

AF:

0.00150

AC:

228

AN:

151844

Hom.:

Cov.:

AF XY:

0.00141

AC XY:

105

AN XY:

74232

show subpopulations

Gnomad4 AFR

AF:

0.00527

Gnomad4 AMR

AF:

0.000263

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000443

Gnomad4 OTH

AF:

0.000948

Alfa

AF:

0.000448

Hom.:

Bravo

AF:

0.00160

ClinVar

Significance: Benign/Likely benign

Submissions summary: Benign:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:3

Likely benign, criteria provided, single submitter	clinical testing	Eurofins Ntd Llc (ga)	Jun 13, 2017	- -
Likely benign, criteria provided, single submitter	clinical testing	PreventionGenetics, part of Exact Sciences	-	- -
Likely benign, criteria provided, single submitter	clinical testing	GeneDx	Jun 01, 2017	This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

Familial aplasia of the vermis

Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Jan 29, 2024

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.41

Cadd

Benign

6.6

Dann

Benign

0.71

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.000036

dbscSNV1_RF

Benign

0.022

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