chr12-107710433-C-T

Variant names:

• chr12-107710433-C-T
• NM_007062.3:c.1319C>T

Variant summary

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

The NM_007062.3(PWP1):​c.1319C>T​(p.Pro440Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,278 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 30)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PWP1 NM_007062.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.67

Genes affected

PWP1 (HGNC:17015): (PWP1 homolog, endonuclein) The protein encoded by this gene contains several WD-40 repeats and is found mostly in the nucleus. The expression and localization of this protein are cell cycle dependent. Expression of this gene is upregulated in pancreatic adenocarcinoma. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Dec 2015]

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, 0.75

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PWP1	NM_007062.3	c.1319C>T	p.Pro440Leu	missense_variant	Exon 14 of 15	ENST00000412830.8	NP_008993.1
PWP1	NM_001317962.2	c.1133C>T	p.Pro378Leu	missense_variant	Exon 14 of 15		NP_001304891.1
PWP1	NM_001317963.2	c.683C>T	p.Pro228Leu	missense_variant	Exon 14 of 15		NP_001304892.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PWP1	ENST00000412830.8	c.1319C>T	p.Pro440Leu	missense_variant	Exon 14 of 15	1	NM_007062.3	ENSP00000387365.3
PWP1	ENST00000541166.1	c.1133C>T	p.Pro378Leu	missense_variant	Exon 14 of 15	2		ENSP00000445249.1

Frequencies

GnomAD3 genomes Cov.: 30

GnomAD4 exome AF: 0.00000137 AC: 2 AN: 1461278 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726962

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.0000116

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 30

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 28, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1319C>T (p.P440L) alteration is located in exon 14 (coding exon 14) of the PWP1 gene. This alteration results from a C to T substitution at nucleotide position 1319, causing the proline (P) at amino acid position 440 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	Uncertain	0.41
BayesDel_addAF	Pathogenic	0.28	D
BayesDel_noAF	Pathogenic	0.16
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.18	T;.
Eigen	Pathogenic	0.88
Eigen_PC	Pathogenic	0.84
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.060	D
MetaRNN	Pathogenic	0.75	D;D
MetaSVM	Benign	-0.32	T
MutationAssessor	Pathogenic	3.2	M;.
PrimateAI	Uncertain	0.58	T
PROVEAN	Pathogenic	-9.1	D;D
REVEL	Uncertain	0.54
Sift	Uncertain	0.0040	D;D
Sift4G	Uncertain	0.0020	D;D
Polyphen		1.0	D;.
Vest4		0.67
MutPred		0.59		Gain of sheet (P = 0.1208);.;
MVP		0.70
MPC		0.50
ClinPred		1.0	D
GERP RS		5.8
Varity_R		0.63
gMVP		0.73

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: chr12-108104210;