chr9-130664655-T-A

Position:

• chr9-130664655-T-A

Variant summary

Our verdict is Pathogenic. Variant got 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_021619.3(PRDM12):​c.2T>A​(p.Met1?) variant causes a start lost change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000734 in 1,225,884 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000073 (0 hom.)
• Consequence: PRDM12 NM_021619.3 start_lost
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.45

Genes affected

PRDM12 (HGNC:13997): (PR/SET domain 12) This gene encodes a transcriptional regulator of sensory neuronal specification that plays a critical role in pain perception. The encoded protein contains an N-terminal PRDI-BF1 and RIZ homology (PR) domain, a SET domain, and three C-terminal C2H2 zinc finger DNA-binding domains. Naturally occurring mutations in this gene are associated with congenital insensitivity to pain (CIP), and hereditary sensory and autonomic neuropathies (HSAN's) affecting peripheral sensory and autonomic neurons. Deregulation of this gene is associated with solid cancers and hematological malignancies including chronic myeloid leukaemia. [provided by RefSeq, Mar 2017]

ACMG classification

Verdict is Pathogenic. Variant got 10 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
PRDM12	NM_021619.3	c.2T>A	p.Met1?	start_lost	1/5	ENST00000253008.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
PRDM12	ENST00000253008.3	c.2T>A	p.Met1?	start_lost	1/5	1	NM_021619.3	P1
PRDM12	ENST00000676323.1	c.2T>A	p.Met1?	start_lost	1/6

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000734 AC: 9 AN: 1225884 Hom.: 0 Cov.: 34 AF XY: 0.00000989 AC XY: 6 AN XY: 606976

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

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: 0.00000930

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 22, 2022

The p.M1? variant (also known as c.2T>A) is located in coding exon 1 of the PRDM12 gene and results from a T to A substitution at nucleotide position 2. This alters the methionine residue at the initiation codon (ATG). Variations that modify the initiation codon (ATG) are expected to result in either loss of translation initiation, N-terminal truncation, or cause a shift in the mRNA reading frame; however, there is an in-frame methionine one amino acid from the initiation site, which may result in N-terminal truncation of unknown functional significance. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Uncertain	0.020	T
BayesDel_noAF	Benign	-0.21
CADD	Uncertain	24
DANN	Benign	0.96
DEOGEN2	Benign	0.0051	T
Eigen	Benign	-0.14
Eigen_PC	Benign	-0.019
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.42	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Benign	-1.0	T
MutationTaster	Benign	0.97	N
PROVEAN	Benign	-0.57	N
REVEL	Benign	0.23
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.0090	B
Vest4		0.90
MutPred		0.98		Loss of stability (P = 0.011);
MVP		0.25
ClinPred		0.99	D
GERP RS		3.2
Varity_R		0.93
gMVP		0.59

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr9-133540042;