16-15026668-T-C

Variant summary

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

The NM_015027.4(PDXDC1):c.1166T>C(p.Val389Ala) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 51)
• Consequence: PDXDC1 NM_015027.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.16

Genes affected

PDXDC1 (HGNC:28995): (pyridoxal dependent decarboxylase domain containing 1) Enables cadherin binding activity. Predicted to be involved in carboxylic acid metabolic process. Located in Golgi apparatus. [provided by Alliance of Genome Resources, Apr 2022]

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, 0.866

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PDXDC1	NM_015027.4	c.1166T>C	p.Val389Ala	missense_variant	14/23	ENST00000396410.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PDXDC1	ENST00000396410.9	c.1166T>C	p.Val389Ala	missense_variant	14/23	1	NM_015027.4	P1

Frequencies

GnomAD3 genomes Cov.: 51

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 51

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 08, 2023

The c.1166T>C (p.V389A) alteration is located in exon 14 (coding exon 14) of the PDXDC1 gene. This alteration results from a T to C substitution at nucleotide position 1166, causing the valine (V) at amino acid position 389 to be replaced by an alanine (A). 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	0.44
BayesDel_addAF	Pathogenic	0.20	D
BayesDel_noAF	Uncertain	0.050
Cadd	Pathogenic	28
Dann	Uncertain	1.0
DEOGEN2	Benign	0.044	T;T;.;T;.;.;.
Eigen	Uncertain	0.67
Eigen_PC	Uncertain	0.66
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.94	D;.;.;D;D;D;D
M_CAP	Benign	0.034	D
MetaRNN	Pathogenic	0.87	D;D;D;D;D;D;D
MetaSVM	Benign	-0.69	T
MutationTaster	Benign	1.0	D;D;D;D;D;D;D;D
PrimateAI	Uncertain	0.65	T
PROVEAN	Uncertain	-2.4	N;N;N;N;N;.;.
Sift	Benign	0.044	D;T;T;T;T;.;.
Sift4G	Pathogenic	0.0	D;D;D;D;D;D;D
Polyphen		1.0, 0.91	.;D;P;D;.;.;.
Vest4		0.84
MutPred		0.74		.;Gain of sheet (P = 0.1208);.;Gain of sheet (P = 0.1208);.;.;.;
MVP		0.68
MPC		0.73
ClinPred		0.91	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.29
gMVP		0.42

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs1409538615; hg19: chr16-15120525;