Genetic Variant OGFR:p.Pro319Ser (chr20-62812570-C-T) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_007346.4(OGFR):c.955C>T(p.Pro319Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000701 in 1,426,258 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

OGFR
NM_007346.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -2.44

Publications

0 publications found

Variant links:

Genes affected

OGFR (HGNC:15768): (opioid growth factor receptor) The protein encoded by this gene is a receptor for opioid growth factor (OGF), also known as [Met(5)]-enkephalin. OGF is a negative regulator of cell proliferation and tissue organization in a variety of processes. The encoded unbound receptor for OGF has been localized to the outer nuclear envelope, where it binds OGF and is translocated into the nucleus. The coding sequence of this gene contains a polymorphic region of 60 nt tandem imperfect repeat units. Several transcripts containing between zero and eight repeat units have been reported. [provided by RefSeq, Jul 2008]

OGFR links:

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ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.046552867).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
OGFR	NM_007346.4 link	c.955C>T	p.Pro319Ser	missense_variant	Exon 7 of 7	ENST00000290291.10	NP_031372.2	Q9NZT2-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
OGFR	ENST00000290291.10 link	c.955C>T	p.Pro319Ser	missense_variant	Exon 7 of 7	1	NM_007346.4	ENSP00000290291.6		Q9NZT2-1
OGFR	ENST00000370461.5 link	c.799C>T	p.Pro267Ser	missense_variant	Exon 5 of 5	2		ENSP00000359491.1		A0A0A0MRN5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.01e-7

AC:

AN:

1426258

Hom.:

Cov.:

AF XY:

0.00000142

AC XY:

AN XY:

706368

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

32746

American (AMR)

AF:

0.00

AC:

AN:

39062

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25546

East Asian (EAS)

AF:

0.00

AC:

AN:

37964

South Asian (SAS)

AF:

0.00

AC:

AN:

82142

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49466

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5704

European-Non Finnish (NFE)

AF:

9.14e-7

AC:

AN:

1094536

Other (OTH)

AF:

0.00

AC:

AN:

59092

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.275

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Jun 11, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.955C>T (p.P319S) alteration is located in exon 7 (coding exon 7) of the OGFR gene. This alteration results from a C to T substitution at nucleotide position 955, causing the proline (P) at amino acid position 319 to be replaced by a serine (S). 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

Benign

0.087

BayesDel_addAF

Benign

-0.35

BayesDel_noAF

Benign

-0.75

CADD

Benign

0.021

(source)

DANN

Benign

0.57

DEOGEN2

Benign

0.0037

T;.

Eigen

Benign

-1.5

Eigen_PC

Benign

-1.6

FATHMM_MKL

Benign

0.033

LIST_S2

Benign

0.45

T;T

M_CAP

Benign

0.0044

MetaRNN

Benign

0.047

T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.20

N;.

PhyloP100

-2.4

PrimateAI

Benign

0.32

PROVEAN

Benign

0.17

N;N

REVEL

Benign

0.0070

Sift

Benign

0.11

T;T

Sift4G

Benign

0.74

T;T

Polyphen

0.0050

B;.

Vest4

0.053

MutPred

0.17

Gain of phosphorylation at P319 (P = 0.0055);.;

MVP

0.040

MPC

0.29

ClinPred

0.068

GERP RS

-2.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.8

Varity_R

0.021

gMVP

0.16

Mutation Taster

=98/2

polymorphism

(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

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over