Genetic Variant AHDC1:p.Val504Leu (chr1-27550606-C-G) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001371928.1(AHDC1):c.1510G>C(p.Val504Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,400 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. V504M) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

AHDC1
NM_001371928.1 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.748

Publications

0 publications found

Variant links:

Genes affected

AHDC1 (HGNC:25230): (AT-hook DNA binding motif containing 1) This gene encodes a protein containing two AT-hooks, which likely function in DNA binding. Mutations in this gene were found in individuals with Xia-Gibbs syndrome. [provided by RefSeq, Jun 2014]

AHDC1 Gene-Disease associations (from GenCC):

AHDC1-related intellectual disability - obstructive sleep apnea - mild dysmorphism syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Illumina, ClinGen, G2P, Orphanet, Labcorp Genetics (formerly Invitae)

AHDC1 links:

ENSG00000300470 (HGNC:):

ENSG00000300470 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.059402645).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001371928.1. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AHDC1	NM_001371928.1	MANE Select	c.1510G>C	p.Val504Leu	missense	Exon 8 of 9	NP_001358857.1	Q5TGY3
	AHDC1	NM_001029882.3		c.1510G>C	p.Val504Leu	missense	Exon 6 of 7	NP_001025053.1	Q5TGY3

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
AHDC1	ENST00000673934.1	MANE Select	c.1510G>C	p.Val504Leu	missense	Exon 8 of 9	ENSP00000501218.1	Q5TGY3
AHDC1	ENST00000247087.10	TSL:5	c.1510G>C	p.Val504Leu	missense	Exon 5 of 6	ENSP00000247087.4	Q5TGY3
AHDC1	ENST00000374011.6	TSL:5	c.1510G>C	p.Val504Leu	missense	Exon 6 of 7	ENSP00000363123.2	Q5TGY3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461400

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

727036

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44712

Ashkenazi Jewish (ASJ)

AF:

0.00

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:

52952

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1112004

Other (OTH)

AF:

0.00

AC:

AN:

60390

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

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

AlphaMissense

Benign

0.12

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.43

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.013

Eigen

Benign

-0.32

Eigen_PC

Benign

-0.13

FATHMM_MKL

Benign

0.50

LIST_S2

Benign

0.72

M_CAP

Benign

0.0028

MetaRNN

Benign

0.059

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.0

PhyloP100

0.75

PrimateAI

Uncertain

0.58

PROVEAN

Benign

0.40

REVEL

Benign

0.12

Sift

Benign

0.25

Sift4G

Benign

0.62

Polyphen

0.0020

Vest4

0.075

MutPred

0.18

Loss of sheet (P = 0.0104)

MVP

0.62

MPC

0.86

ClinPred

0.16

GERP RS

4.9

Varity_R

0.068

gMVP

0.64

Mutation Taster

=94/6

polymorphism

(source)

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