chr7-82758698-A-T

Variant names:

• chr7-82758698-A-T
• rs752385627
• NM_033026.6:c.15306T>A

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_033026.6(PCLO):​c.15306T>A​(p.Asn5102Lys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,447,346 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. N5102S) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PCLO NM_033026.6 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.79
• Publications: 0 publications found

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]

PCLO Gene-Disease associations (from GenCC):

• pontocerebellar hypoplasia type 3

  Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Orphanet, Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.779

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_033026.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCLO	NM_033026.6	MANE Select	c.15306T>A	p.Asn5102Lys	missense	Exon 25 of 25	NP_149015.2	Q9Y6V0-5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PCLO	ENST00000333891.14	TSL:2 MANE Select	c.15306T>A	p.Asn5102Lys	missense	Exon 25 of 25	ENSP00000334319.8	Q9Y6V0-5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000138 AC: 2 AN: 1447346 Hom.: 0 Cov.: 27 AF XY: 0.00 AC XY: 0 AN XY: 720644

African (AFR) AF: 0.00 AC: 0 AN: 32912

American (AMR) AF: 0.00 AC: 0 AN: 43862

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25794

East Asian (EAS) AF: 0.00 AC: 0 AN: 39576

South Asian (SAS) AF: 0.00 AC: 0 AN: 85344

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53174

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5722

European-Non Finnish (NFE) AF: 0.00000182 AC: 2 AN: 1101172

Other (OTH) AF: 0.00 AC: 0 AN: 59790

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.96
BayesDel_addAF	Benign	-0.080	T
BayesDel_noAF	Benign	-0.35
CADD	Benign	19
DANN	Uncertain	0.98
Eigen	Uncertain	0.47
Eigen_PC	Uncertain	0.43
FATHMM_MKL	Uncertain	0.91	D
LIST_S2	Uncertain	0.96	D
M_CAP	Benign	0.070	D
MetaRNN	Pathogenic	0.78	D
MetaSVM	Uncertain	-0.23	T
PhyloP100		1.8
PrimateAI	Pathogenic	0.80	T
PROVEAN	Uncertain	-2.8	D
REVEL	Uncertain	0.41
Sift	Uncertain	0.0020	D
Sift4G	Pathogenic	0.0	D
Vest4		0.72
MutPred		0.67		Gain of methylation at N5102 (P = 0.0134)
MVP		0.49
MPC		0.040
ClinPred		0.83	D
GERP RS		4.3
Varity_R		0.42
gMVP		0.40
Mutation Taster		=48/52	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs752385627; hg19: chr7-82388014;