2-44321864-G-T

Variant names:

• chr2-44321864-G-T
• rs1305157753
• NM_001171613.2:c.1790C>A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001171613.2(PREPL):​c.1790C>A​(p.Pro597His) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,442 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: PREPL NM_001171613.2 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.63

Genes affected

PREPL (HGNC:30228): (prolyl endopeptidase like) The protein encoded by this gene belongs to the prolyl oligopeptidase subfamily of serine peptidases. Mutations in this gene have been associated with hypotonia-cystinuria syndrome, also known as the 2p21 deletion syndrome. Several alternatively spliced transcript variants encoding either the same or different isoforms have been described for this gene.[provided by RefSeq, Jan 2010]

SLC3A1 (HGNC:11025): (solute carrier family 3 member 1) This gene encodes a type II membrane glycoprotein which is one of the components of the renal amino acid transporter which transports neutral and basic amino acids in the renal tubule and intestinal tract. Mutations and deletions in this gene are associated with cystinuria. Alternatively spliced transcript variants have been described, but their biological validity has not been determined. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PREPL	NM_001171613.2	c.1790C>A	p.Pro597His	missense_variant	Exon 13 of 14	ENST00000409411.6	NP_001165084.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PREPL	ENST00000409411.6	c.1790C>A	p.Pro597His	missense_variant	Exon 13 of 14	1	NM_001171613.2	ENSP00000387095.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461442 Hom.: 0 Cov.: 32 AF XY: 0.00000275 AC XY: 2 AN XY: 727032

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.0000756

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

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.050	T
BayesDel_noAF	Benign	-0.31
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.083	.;.;.;T;T;T;T;.;.
Eigen	Uncertain	0.28
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.89	D;.;.;.;.;.;D;D;D
M_CAP	Benign	0.017	T
MetaRNN	Uncertain	0.70	D;D;D;D;D;D;D;D;D
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.94	.;.;.;L;L;L;L;.;.
PrimateAI	Benign	0.39	T
PROVEAN	Benign	0.91	N;N;N;N;N;N;N;N;N
REVEL	Benign	0.20
Sift	Uncertain	0.0010	D;D;D;D;D;D;D;D;T
Sift4G	Uncertain	0.020	D;D;D;D;D;D;D;D;D
Polyphen		0.88, 0.99, 1.0	.;.;.;P;P;P;P;D;D
Vest4		0.61
MutPred		0.72		.;.;.;Loss of sheet (P = 0.0457);Loss of sheet (P = 0.0457);Loss of sheet (P = 0.0457);Loss of sheet (P = 0.0457);.;.;
MVP		0.45
MPC		0.021
ClinPred		0.77	D
GERP RS		4.9
Varity_R		0.20
gMVP		0.41

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: rs1305157753; hg19: chr2-44549003;