22-18913213-G-A

Variant summary

Our verdict is Likely benign. Variant got -3 ACMG points: 1P and 4B. PP3BS2

The NM_016335.6(PRODH):c.1765C>T(p.Arg589Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 2 hom., cov: 0)

Exomes 𝑓: 0.000012 ( 3 hom. )

Failed GnomAD Quality Control

Consequence

PRODH
NM_016335.6 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.754

Variant links:

Genes affected

PRODH (HGNC:9453): (proline dehydrogenase 1) This gene encodes a mitochondrial protein that catalyzes the first step in proline degradation. Mutations in this gene are associated with hyperprolinemia type 1 and susceptibility to schizophrenia 4 (SCZD4). This gene is located on chromosome 22q11.21, a region which has also been associated with the contiguous gene deletion syndromes, DiGeorge and CATCH22. Alternatively spliced transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Aug 2010]

PRODH links:

DGCR6 (HGNC:2846): (DiGeorge syndrome critical region gene 6) DiGeorge syndrome, and more widely, the CATCH 22 syndrome, are associated with microdeletions in chromosomal region 22q11.2. The product of this gene shares homology with the Drosophila melanogaster gonadal protein, which participates in gonadal and germ cell development, and with the gamma-1 subunit of human laminin. This gene is a candidate for involvement in DiGeorge syndrome pathology and in schizophrenia. [provided by RefSeq, Nov 2008]

DGCR6 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -3 ACMG points.

PP3

MetaRNN computational evidence supports a deleterious effect, 0.748

BS2

High Homozygotes in GnomAd at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE
PRODH	NM_016335.6 linkuse as main transcript	c.1765C>T	p.Arg589Trp	missense_variant	14/14	ENST00000357068.11
PRODH	NM_001195226.2 linkuse as main transcript	c.1441C>T	p.Arg481Trp	missense_variant	14/14
PRODH	NM_001368250.2 linkuse as main transcript	c.1441C>T	p.Arg481Trp	missense_variant	14/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRODH	ENST00000357068.11 linkuse as main transcript	c.1765C>T	p.Arg589Trp	missense_variant	14/14	1	NM_016335.6	P3

Frequencies

GnomAD3 genomes

AF:

0.000136

AC:

AN:

29518

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00275

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.00

GnomAD4 exome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000122

AC:

AN:

490868

Hom.:

Cov.:

AF XY:

0.0000166

AC XY:

AN XY:

241216

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000285

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:

0.0000936

GnomAD4 genome

AF:

0.000135

AC:

AN:

29592

Hom.:

Cov.:

AF XY:

0.000139

AC XY:

AN XY:

14350

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00274

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.00

ExAC

AF:

0.0000189

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 25, 2021

The c.1765C>T (p.R589W) alteration is located in exon 15 (coding exon 14) of the PRODH gene. This alteration results from a C to T substitution at nucleotide position 1765, causing the arginine (R) at amino acid position 589 to be replaced by a tryptophan (W). The p.R589W alteration is predicted to be tolerated by in silico analysis. 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

BayesDel_addAF

Benign

-0.060

BayesDel_noAF

Benign

-0.32

Cadd

Benign

Dann

Uncertain

0.99

DEOGEN2

Uncertain

0.50

D;.;.;D

Eigen

Benign

-0.23

Eigen_PC

Benign

-0.50

FATHMM_MKL

Uncertain

0.77

LIST_S2

Benign

0.82

T;.;T;.

M_CAP

Benign

0.062

MetaRNN

Pathogenic

0.75

D;D;D;D

MetaSVM

Benign

-0.48

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.49

Sift4G

Pathogenic

0.0

D;D;D;D

Polyphen

1.0

.;D;D;.

Vest4

0.52

MutPred

0.76

Loss of disorder (P = 5e-04);.;.;Loss of disorder (P = 5e-04);

MVP

0.22

MPC

0.85

ClinPred

0.99

GERP RS

-0.84

gMVP

0.95

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over