X-129806452-G-A

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_016032.4(ZDHHC9):c.1013C>T(p.Pro338Leu) variant causes a missense change. The variant allele was found at a frequency of 0.000038 in 1,209,380 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 14 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. P338P) has been classified as Benign.

Frequency

Genomes: 𝑓 0.000036 ( 0 hom., 1 hem., cov: 22)

Exomes 𝑓: 0.000038 ( 0 hom. 13 hem. )

Consequence

ZDHHC9
NM_016032.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:3O:1

Conservation

PhyloP100: 3.89

Variant links:

Genes affected

ZDHHC9 (HGNC:18475): (zinc finger DHHC-type palmitoyltransferase 9) This gene encodes an integral membrane protein that is a member of the zinc finger DHHC domain-containing protein family. The encoded protein forms a complex with golgin subfamily A member 7 and functions as a palmitoyltransferase. This protein specifically palmitoylates HRAS and NRAS. Mutations in this gene are associated with X-linked cognitive disability. Alternate splicing results in multiple transcript variants that encode the same protein.[provided by RefSeq, May 2010]

ZDHHC9 links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2613229).

BS2

High Hemizygotes in GnomAdExome4 at 13 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ZDHHC9	NM_016032.4 link	c.1013C>T	p.Pro338Leu	missense_variant	Exon 11 of 11	ENST00000357166.11	NP_057116.2	Q9Y397
ZDHHC9	NM_001008222.3 link	c.1013C>T	p.Pro338Leu	missense_variant	Exon 10 of 10		NP_001008223.1	Q9Y397

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ZDHHC9	ENST00000357166.11 link	c.1013C>T	p.Pro338Leu	missense_variant	Exon 11 of 11	1	NM_016032.4	ENSP00000349689.6		Q9Y397
ZDHHC9	ENST00000371064.7 link	c.1013C>T	p.Pro338Leu	missense_variant	Exon 10 of 10	1		ENSP00000360103.3		Q9Y397

Frequencies

GnomAD3 genomes

AF:

0.0000359

AC:

AN:

111410

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000327

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000957

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:

0.0000377

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000109

AC:

AN:

183382

AF XY:

0.0000147

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:

0.0000244

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000383

AC:

AN:

1097970

Hom.:

Cov.:

AF XY:

0.0000358

AC XY:

AN XY:

363330

show subpopulations

Gnomad4 AFR exome

AF:

0.00

AC:

AN:

26397

Gnomad4 AMR exome

AF:

0.00

AC:

AN:

35204

Gnomad4 ASJ exome

AF:

0.00

AC:

AN:

19385

Gnomad4 EAS exome

AF:

0.00

AC:

AN:

30203

Gnomad4 SAS exome

AF:

0.00

AC:

AN:

54138

Gnomad4 FIN exome

AF:

0.00

AC:

AN:

40527

Gnomad4 NFE exome

AF:

0.0000487

AC:

AN:

841929

Gnomad4 Remaining exome

AF:

0.00

AC:

AN:

46085

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Exome Het

Exome Hom

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:

0.0000359

AC:

AN:

111410

Hom.:

Cov.:

AF XY:

0.0000298

AC XY:

AN XY:

33590

show subpopulations

Gnomad4 AFR

AF:

0.0000327

AC:

0.0000327364

AN:

0.0000327364

Gnomad4 AMR

AF:

0.0000957

AC:

0.0000957396

AN:

0.0000957396

Gnomad4 ASJ

AF:

0.00

AC:

AN:

Gnomad4 EAS

AF:

0.00

AC:

AN:

Gnomad4 SAS

AF:

0.00

AC:

AN:

Gnomad4 FIN

AF:

0.00

AC:

AN:

Gnomad4 NFE

AF:

0.0000377

AC:

0.0000376556

AN:

0.0000376556

Gnomad4 OTH

AF:

0.00

AC:

AN:

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Genome Het

Genome Hom

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:

0.00

Hom.:

Bravo

AF:

0.0000340

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000346

AC:

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:3Other:1

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Syndromic X-linked intellectual disability Raymond type

Uncertain:1Other:1

GenomeConnect - Brain Gene Registry

Significance:not provided

Review Status:no classification provided

Collection Method:phenotyping only

Variant interpreted as Uncertain significance and reported on 07-01-2019 by Invitae . Assertions are reported exactly as they appear on the patient provided laboratory report. GenomeConnect does not attempt to reinterpret the variant. The IDDRC-CTSA National Brain Gene Registry (BGR) is a study funded by the U.S. National Center for Advancing Translational Sciences (NCATS) and includes 13 Intellectual and Developmental Disability Research Center (IDDRC) institutions. The study is led by Principal Investigator Philip Payne PhD, FACMI from Washington University. The BGR is a data commons of gene variants paired with subject clinical information. This database helps scientists learn more about genetic changes and their impact on the brain and behavior. Participation in the Brain Gene Registry requires participation in GenomeConnect. More information about the Brain Gene Registry can be found on the study website - https://braingeneregistry.wustl.edu/. -

Sep 30, 2024

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 338 of the ZDHHC9 protein (p.Pro338Leu). This variant is present in population databases (rs753807510, gnomAD 0.002%), including at least one homozygous and/or hemizygous individual. This variant has not been reported in the literature in individuals affected with ZDHHC9-related conditions. ClinVar contains an entry for this variant (Variation ID: 569982). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

not specified

Uncertain:1

Jun 07, 2024

Women's Health and Genetics/Laboratory Corporation of America, LabCorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Variant summary: ZDHHC9 c.1013C>T (p.Pro338Leu) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 3.8e-05 in 1209380 control chromosomes, including 14 hemizygotes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.1013C>T in individuals affected with Mental Retardation, X-Linked, Syndromic, Raymond Type and no experimental evidence demonstrating its impact on protein function have been reported. ClinVar contains an entry for this variant (Variation ID: 569982). Based on the evidence outlined above, the variant was classified as uncertain significance. -

Inborn genetic diseases

Uncertain:1

Jan 22, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.1013C>T (p.P338L) alteration is located in exon 11 (coding exon 9) of the ZDHHC9 gene. This alteration results from a C to T substitution at nucleotide position 1013, causing the proline (P) at amino acid position 338 to be replaced by a leucine (L). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.087

BayesDel_addAF

Benign

-0.18

BayesDel_noAF

Benign

-0.44

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.049

T;T

FATHMM_MKL

Uncertain

0.92

LIST_S2

Benign

0.83

.;T

M_CAP

Pathogenic

0.41

MetaRNN

Benign

0.26

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.90

L;L

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-0.81

N;N

REVEL

Benign

0.17

Sift

Benign

0.073

T;T

Sift4G

Benign

0.17

T;T

Polyphen

1.0

D;D

Vest4

0.24

MutPred

0.21

Loss of loop (P = 0.1247);Loss of loop (P = 0.1247);

MVP

0.31

MPC

1.1

ClinPred

0.30

GERP RS

5.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.13

gMVP

0.43

Mutation Taster

=78/22

polymorphism

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

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