NM_033026.6:c.15356T>C

Variant names:

• chr7-82758648-A-G
• rs1790367655
• NM_033026.6:c.15356T>C

Variant summary

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

The NM_033026.6(PCLO):​c.15356T>C​(p.Leu5119Pro) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,458,788 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: 32)
  • Exomes 𝑓: 6.9e-7 (0 hom.)
• Consequence: PCLO NM_033026.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.32

Genes affected

PCLO (HGNC:13406): (piccolo presynaptic cytomatrix protein) The protein encoded by this gene is part of the presynaptic cytoskeletal matrix, which is involved in establishing active synaptic zones and in synaptic vesicle trafficking. Variations in this gene have been associated with bipolar disorder and major depressive disorder. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2011]

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, 0.898

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCLO	NM_033026.6	c.15356T>C	p.Leu5119Pro	missense_variant	Exon 25 of 25	ENST00000333891.14	NP_149015.2
PCLO	XM_047420210.1	c.15539T>C	p.Leu5180Pro	missense_variant	Exon 26 of 26		XP_047276166.1
PCLO	XM_047420211.1	c.15065T>C	p.Leu5022Pro	missense_variant	Exon 26 of 26		XP_047276167.1
PCLO	XM_017012006.3	c.8444T>C	p.Leu2815Pro	missense_variant	Exon 24 of 24		XP_016867495.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCLO	ENST00000333891.14	c.15356T>C	p.Leu5119Pro	missense_variant	Exon 25 of 25	2	NM_033026.6	ENSP00000334319.8

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.86e-7 AC: 1 AN: 1458788 Hom.: 0 Cov.: 28 AF XY: 0.00000138 AC XY: 1 AN XY: 725870

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: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Dec 11, 2023

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 5119 of the PCLO protein (p.Leu5119Pro). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with PCLO-related conditions. ClinVar contains an entry for this variant (Variation ID: 1461920). Experimental studies and prediction algorithms are not available or were not evaluated, and the functional significance of this variant is currently unknown. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.050
CADD	Uncertain	24
DANN	Benign	0.96
Eigen	Uncertain	0.65
Eigen_PC	Pathogenic	0.68
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.13	D
MetaRNN	Pathogenic	0.90	D
MetaSVM	Benign	-1.1	T
PrimateAI	Uncertain	0.75	T
PROVEAN	Uncertain	-3.3	D
REVEL	Uncertain	0.57
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Vest4		0.90
MutPred		0.76		Loss of stability (P = 0.0094);
MVP		0.59
MPC		0.050
ClinPred		0.99	D
GERP RS		5.4
Varity_R		0.88
gMVP		0.86

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

LitVar

Other links and lift over

dbSNP: rs1790367655; hg19: chr7-82387964;