20-1982979-C-G

Variant names:

• chr20-1982979-C-G
• rs149056587
• NM_024411.5:c.106G>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_024411.5(PDYN):​c.106G>C​(p.Gly36Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,730 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G36C) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PDYN NM_024411.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.369
• Publications: 0 publications found

Genes affected

PDYN (HGNC:8820): (prodynorphin) The protein encoded by this gene is a preproprotein that is proteolytically processed to form the secreted opioid peptides beta-neoendorphin, dynorphin, leu-enkephalin, rimorphin, and leumorphin. These peptides are ligands for the kappa-type of opioid receptor. Dynorphin is involved in modulating responses to several psychoactive substances, including cocaine. Multiple alternatively spliced transcript variants encoding the same protein have been found for this gene. [provided by RefSeq, Jul 2010]

PDYN-AS1 (HGNC:53462): (PDYN antisense RNA 1)

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.10188076).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_024411.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDYN	NM_024411.5	MANE Select	c.106G>C	p.Gly36Arg	missense	Exon 3 of 4	NP_077722.1	P01213
	PDYN	NM_001190892.1		c.106G>C	p.Gly36Arg	missense	Exon 2 of 3	NP_001177821.1	P01213
	PDYN	NM_001190898.3		c.106G>C	p.Gly36Arg	missense	Exon 3 of 4	NP_001177827.1	P01213

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PDYN	ENST00000217305.3	TSL:1 MANE Select	c.106G>C	p.Gly36Arg	missense	Exon 3 of 4	ENSP00000217305.2	P01213
	PDYN	ENST00000539905.5	TSL:4	c.106G>C	p.Gly36Arg	missense	Exon 2 of 3	ENSP00000440185.1	P01213
	PDYN	ENST00000540134.5	TSL:4	c.106G>C	p.Gly36Arg	missense	Exon 3 of 4	ENSP00000442259.1	P01213

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461730 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 727154

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39696

South Asian (SAS) AF: 0.00 AC: 0 AN: 86230

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53388

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111930

Other (OTH) AF: 0.00 AC: 0 AN: 60394

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.12
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	13
DANN	Benign	0.63
DEOGEN2	Benign	0.075	T
Eigen	Benign	-0.95
Eigen_PC	Benign	-0.89
FATHMM_MKL	Benign	0.031	N
LIST_S2	Benign	0.68	T
M_CAP	Benign	0.021	T
MetaRNN	Benign	0.10	T
MetaSVM	Benign	-0.97	T
MutationAssessor	Benign	1.1	L
PhyloP100		-0.37
PrimateAI	Benign	0.29	T
PROVEAN	Benign	1.1	N
REVEL	Benign	0.14
Sift	Benign	0.54	T
Sift4G	Benign	0.56	T
Polyphen		0.013	B
Vest4		0.26
MutPred		0.57		Loss of ubiquitination at K32 (P = 0.0332)
MVP		0.64
MPC		0.037
ClinPred		0.023	T
GERP RS		0.43
Varity_R		0.043
gMVP		0.46
Mutation Taster		=89/11	polymorphism

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

Other links and lift over

dbSNP: rs149056587; hg19: chr20-1963625;