5-141209505-C-A

Position:

• chr5-141209505-C-A

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_018932.4(PCDHB12):​c.598C>A​(p.Leu200Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PCDHB12 NM_018932.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.0520

Genes affected

PCDHB12 (HGNC:8683): (protocadherin beta 12) This gene is a member of the protocadherin beta gene cluster, one of three related gene clusters tandemly linked on chromosome five. The gene clusters demonstrate an unusual genomic organization similar to that of B-cell and T-cell receptor gene clusters. The beta cluster contains 16 genes and 3 pseudogenes, each encoding 6 extracellular cadherin domains and a cytoplasmic tail that deviates from others in the cadherin superfamily. The extracellular domains interact in a homophilic manner to specify differential cell-cell connections. Unlike the alpha and gamma clusters, the transcripts from these genes are made up of only one large exon, not sharing common 3' exons as expected. These neural cadherin-like cell adhesion proteins are integral plasma membrane proteins. Their specific functions are unknown but they most likely play a critical role in the establishment and function of specific cell-cell neural connections. [provided by RefSeq, Jul 2008]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.87

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PCDHB12	NM_018932.4	c.598C>A	p.Leu200Met	missense_variant	1/1	ENST00000239450.4	NP_061755.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PCDHB12	ENST00000239450.4	c.598C>A	p.Leu200Met	missense_variant	1/1		NM_018932.4	ENSP00000239450	P1
	ENST00000624192.1	n.72+32168G>T		intron_variant, non_coding_transcript_variant		5
PCDHB12	ENST00000622978.1	c.166-316C>A		intron_variant		2		ENSP00000485352
PCDHB12	ENST00000624949.1	c.-98-316C>A		intron_variant		2		ENSP00000485303

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Dec 05, 2022

The c.598C>A (p.L200M) alteration is located in exon 1 (coding exon 1) of the PCDHB12 gene. This alteration results from a C to A substitution at nucleotide position 598, causing the leucine (L) at amino acid position 200 to be replaced by a methionine (M). 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	0.23
BayesDel_addAF	Uncertain	0.047	T
BayesDel_noAF	Benign	-0.17
CADD	Benign	21
DANN	Uncertain	0.99
DEOGEN2	Benign	0.18	T
Eigen	Uncertain	0.29
Eigen_PC	Benign	0.017
FATHMM_MKL	Benign	0.64	D
LIST_S2	Pathogenic	0.98	D
M_CAP	Uncertain	0.17	D
MetaRNN	Pathogenic	0.87	D
MetaSVM	Uncertain	0.59	D
MutationAssessor	Pathogenic	3.6	H
MutationTaster	Benign	1.0	D;N
PrimateAI	Benign	0.45	T
PROVEAN	Benign	-2.0	N
REVEL	Uncertain	0.48
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0080	D
Polyphen		1.0	D
Vest4		0.60
MutPred		0.77		Loss of phosphorylation at Y202 (P = 0.1);
MVP		0.75
MPC		0.75
ClinPred		0.84	D
GERP RS		4.3
Varity_R		0.30
gMVP		0.11

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr5-140589077;