Genetic Variant PCBD1:p.Gln98Lys (chr10-70883973-G-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_000281.4(PCBD1):c.292C>A(p.Gln98Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,744 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Synonymous variant affecting the same amino acid position (i.e. Q98Q) has been classified as Likely benign.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

PCBD1
NM_000281.4 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.49

Publications

0 publications found

Variant links:

Genes affected

PCBD1 (HGNC:8646): (pterin-4 alpha-carbinolamine dehydratase 1) This gene encodes a member of the pterin-4-alpha-carbinolamine dehydratase family. The encoded protein has been identified as a moonlighting protein based on its ability to perform mechanistically distinct functions. The encoded protein functions as both a dehydratase involved in tetrahydrobiopterin biosynthesis, and as a cofactor for HNF1A-dependent transcription. A deficiency of this enzyme leads to hyperphenylalaninemia. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

PCBD1 links:

SGPL1 (HGNC:10817): (sphingosine-1-phosphate lyase 1) Enables sphinganine-1-phosphate aldolase activity. Involved in apoptotic signaling pathway; fatty acid metabolic process; and sphingolipid metabolic process. Located in endoplasmic reticulum. Implicated in nephrotic syndrome type 14. [provided by Alliance of Genome Resources, Apr 2022]

SGPL1 Gene-Disease associations (from GenCC):

nephrotic syndrome 14
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), PanelApp Australia

SGPL1 links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.28654873).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PCBD1	NM_000281.4 link	c.292C>A	p.Gln98Lys	missense_variant	Exon 4 of 4	ENST00000299299.4	NP_000272.1	P61457
PCBD1	NM_001289797.2 link	c.145C>A	p.Gln49Lys	missense_variant	Exon 4 of 4		NP_001276726.1	P61457
PCBD1	NM_001323004.2 link	c.216+1179C>A		intron_variant	Intron 3 of 3		NP_001309933.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PCBD1	ENST00000299299.4 link	c.292C>A	p.Gln98Lys	missense_variant	Exon 4 of 4	1	NM_000281.4	ENSP00000299299.3		P61457

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461744

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727146

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44710

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26128

East Asian (EAS)

AF:

0.00

AC:

AN:

39700

South Asian (SAS)

AF:

0.00

AC:

AN:

86168

European-Finnish (FIN)

AF:

0.0000187

AC:

AN:

53414

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

8.99e-7

AC:

AN:

1111980

Other (OTH)

AF:

0.00

AC:

AN:

60396

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Pathogenic

0.21

BayesDel_noAF

Uncertain

0.070

CADD

Benign

(source)

DANN

Benign

0.65

DEOGEN2

Benign

0.33

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.15

FATHMM_MKL

Pathogenic

0.97

LIST_S2

Benign

0.77

M_CAP

Benign

0.083

MetaRNN

Benign

0.29

MetaSVM

Benign

-0.45

MutationAssessor

Benign

-0.080

PhyloP100

7.5

PrimateAI

Uncertain

0.66

PROVEAN

Benign

0.38

REVEL

Uncertain

0.51

Sift

Benign

1.0

Sift4G

Benign

1.0

Polyphen

0.0010

Vest4

0.38

MutPred

0.51

Gain of methylation at Q98 (P = 0.0148);

MVP

0.84

MPC

0.20

ClinPred

0.39

GERP RS

5.7

Varity_R

0.38

gMVP

0.68

Mutation Taster

=49/51

disease causing

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over