19-49127988-C-T

Position:

• chr19-49127988-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP5_Moderate

The NM_003660.4(PPFIA3):​c.115C>T​(p.Arg39Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: PPFIA3 NM_003660.4 missense
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 1.12

Genes affected

PPFIA3 (HGNC:9247): (PTPRF interacting protein alpha 3) The protein encoded by this gene is a member of the LAR protein-tyrosine phosphatase-interacting protein (liprin) family. Liprins interact with members of LAR family of transmembrane protein tyrosine phosphatases, which are known to be important for axon guidance and mammary gland development. Liprin family protein has been shown to localize phosphatase LAR to cell focal adhesions and may be involved in the molecular organization of presynaptic active zones. [provided by RefSeq, Jul 2008]

PPFIA3 (HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-49127988-C-T is Pathogenic according to our data. Variant chr19-49127988-C-T is described in ClinVar as [Pathogenic]. Clinvar id is 2430185.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
PPFIA3	NM_003660.4	c.115C>T	p.Arg39Cys	missense_variant	2/30	ENST00000334186.9	NP_003651.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
PPFIA3	ENST00000334186.9	c.115C>T	p.Arg39Cys	missense_variant	2/30	1	NM_003660.4	ENSP00000335614.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

GeneDx

Feb 17, 2023

Functional studies suggest a damaging effect across multiple developmental processes (Paul et al., 2023); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Not observed at significant frequency in large population cohorts (gnomAD) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Uncertain	0.11	D
BayesDel_noAF	Uncertain	-0.080
CADD	Pathogenic	33
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.44	T;T;.
Eigen	Uncertain	0.55
Eigen_PC	Uncertain	0.48
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Pathogenic	1.0	D;D;D
M_CAP	Uncertain	0.27	D
MetaRNN	Uncertain	0.47	T;T;T
MetaSVM	Benign	-0.39	T
MutationAssessor	Uncertain	2.6	M;.;M
PrimateAI	Pathogenic	0.95	D
PROVEAN	Pathogenic	-6.3	D;.;.
REVEL	Uncertain	0.32
Sift	Pathogenic	0.0	D;.;.
Sift4G	Pathogenic	0.0	D;D;D
Polyphen		1.0	D;.;.
Vest4		0.70
MutPred		0.29		Gain of catalytic residue at M35 (P = 0.0362);Gain of catalytic residue at M35 (P = 0.0362);Gain of catalytic residue at M35 (P = 0.0362);
MVP		0.69
MPC		3.4
ClinPred		1.0	D
GERP RS		4.2
Varity_R		0.72
gMVP		0.93

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: chr19-49631245;