Genetic Variant PCDH11X:p.Thr81Ala (chrX-91835745-A-G) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BS2

The NM_032968.5(PCDH11X):c.241A>G(p.Thr81Ala) variant causes a missense change. The variant allele was found at a frequency of 0.00000637 in 1,098,077 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 21)

Exomes 𝑓: 0.0000064 ( 0 hom. 2 hem. )

Consequence

PCDH11X
NM_032968.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.69

Publications

0 publications found

Variant links:

Genes affected

PCDH11X (HGNC:8656): (protocadherin 11 X-linked) This gene belongs to the protocadherin gene family, a subfamily of the cadherin superfamily. The encoded protein consists of an extracellular domain containing 7 cadherin repeats, a transmembrane domain and a cytoplasmic tail that differs from those of the classical cadherins. The gene is located in a major X/Y block of homology and its Y homolog, despite divergence leading to coding region changes, is the most closely related cadherin family member. The protein is thought to play a fundamental role in cell-cell recognition essential for the segmental development and function of the central nervous system. Disruption of this gene may be associated with developmental dyslexia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jun 2014]

PCDH11X links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BS2

High Hemizygotes in GnomAdExome4 at 2 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCDH11X	NM_032968.5 link	c.241A>G	p.Thr81Ala	missense_variant	Exon 5 of 11	ENST00000682573.1	NP_116750.1	Q9BZA7-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCDH11X	ENST00000682573.1 link	c.241A>G	p.Thr81Ala	missense_variant	Exon 5 of 11		NM_032968.5	ENSP00000507225.1		Q9BZA7-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.0000218

AC:

AN:

183278

AF XY:

0.0000147

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000146

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000637

AC:

AN:

1098077

Hom.:

Cov.:

AF XY:

0.00000550

AC XY:

AN XY:

363557

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

26394

American (AMR)

AF:

0.000170

AC:

AN:

35196

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19382

East Asian (EAS)

AF:

0.00

AC:

AN:

30206

South Asian (SAS)

AF:

0.00

AC:

AN:

54142

European-Finnish (FIN)

AF:

0.00

AC:

AN:

40534

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4134

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

842003

Other (OTH)

AF:

0.0000217

AC:

AN:

46086

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.465

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

Alfa

AF:

0.000102

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 03, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.241A>G (p.T81A) alteration is located in exon 1 (coding exon 1) of the PCDH11X gene. This alteration results from a A to G substitution at nucleotide position 241, causing the threonine (T) at amino acid position 81 to be replaced by an alanine (A). 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

0.20

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.21

CADD

Benign

(source)

DANN

Uncertain

1.0

DEOGEN2

Benign

0.12

.;T;.;.;.;.

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Uncertain

0.91

D;D;D;D;D;D

M_CAP

Uncertain

0.088

MetaRNN

Uncertain

0.73

D;D;D;D;D;D

MetaSVM

Benign

-0.74

MutationAssessor

Pathogenic

3.1

M;M;M;M;M;M

PhyloP100

6.7

PrimateAI

Uncertain

0.67

PROVEAN

Uncertain

-4.0

D;D;D;D;D;D

REVEL

Benign

0.29

Sift

Uncertain

0.0010

D;D;D;D;D;D

Sift4G

Pathogenic

0.0

D;D;D;D;D;D

Polyphen

0.77

P;P;P;P;P;P

Vest4

0.66

MutPred

0.56

Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);Loss of loop (P = 0.1242);

MVP

0.89

MPC

2.1

ClinPred

0.82

GERP RS

4.1

PromoterAI

-0.0098

Neutral

(source)

Varity_R

0.68

gMVP

0.85

Mutation Taster

=99/1

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

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over