rs193920949

Positions:

• chr14-71019061-G-A
• chr14-71019061-G-T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_014982.3(PCNX1):​c.3049G>A​(p.Ala1017Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,460,960 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic 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. A1017S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PCNX1 NM_014982.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.60

Genes affected

PCNX1 (HGNC:19740): (pecanex 1) This gene encodes an evolutionarily conserved transmembrane protein similar to the pecanex protein in Drosophila. The fly protein is a component of the Notch signaling pathway, which functions in several developmental processes. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.816

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PCNX1	NM_014982.3	c.3049G>A	p.Ala1017Thr	missense_variant	12/36	ENST00000304743.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PCNX1	ENST00000304743.7	c.3049G>A	p.Ala1017Thr	missense_variant	12/36	1	NM_014982.3	P4
PCNX1	ENST00000439984.7	c.2716G>A	p.Ala906Thr	missense_variant	10/34	1		A1
PCNX1	ENST00000554691.5	c.226G>A	p.Ala76Thr	missense_variant	2/25	1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD3 exomes AF: 0.00000399 AC: 1 AN: 250560 Hom.: 0 AF XY: 0.00 AC XY: 0 AN XY: 135444

Gnomad AFR exome AF: 0.0000618

Gnomad AMR exome AF: 0.00

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad SAS 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: 6.84e-7 AC: 1 AN: 1460960 Hom.: 0 Cov.: 31 AF XY: 0.00 AC XY: 0 AN XY: 726764

Gnomad4 AFR exome AF: 0.0000299

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000756

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.90
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Pathogenic	0.18
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Benign	0.12	T;.
Eigen	Uncertain	0.65
Eigen_PC	Pathogenic	0.70
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.97	D;D
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.82	D;D
MetaSVM	Uncertain	-0.063	T
MutationAssessor	Uncertain	2.6	M;.
MutationTaster	Benign	1.0	D;D;D
PrimateAI	Uncertain	0.72	T
PROVEAN	Uncertain	-2.4	N;N
REVEL	Uncertain	0.45
Sift	Uncertain	0.0020	D;D
Sift4G	Uncertain	0.0070	D;D
Polyphen		1.0	D;.
Vest4		0.92
MutPred		0.47		Loss of stability (P = 0.2351);.;
MVP		0.33
MPC		0.52
ClinPred		0.89	D
GERP RS		5.5
Varity_R		0.45
gMVP		0.77

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.040		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

Other links and lift over

dbSNP: rs193920949; hg19: chr14-71485778;