NM_181882.3:c.485A>C

Variant names:

• chr19-40397867-T-G
• rs879254072
• NM_181882.3:c.485A>C

Variant summary

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

The NM_181882.3(PRX):​c.485A>C​(p.Lys162Thr) variant causes a missense change. The variant allele was found at a frequency of 0.00000497 in 1,608,794 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K162R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 33)
  • Exomes 𝑓: 0.0000048 (0 hom.)
• Consequence: PRX NM_181882.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.00
• Publications: 3 publications found

Genes affected

PRX (HGNC:13797): (periaxin) This gene encodes a protein involved in peripheral nerve myelin upkeep. The encoded protein contains 2 PDZ domains which were named after PSD95 (post synaptic density protein), DlgA (Drosophila disc large tumor suppressor), and ZO1 (a mammalian tight junction protein). Two alternatively spliced transcript variants have been described for this gene which encode different protein isoforms and which are targeted differently in the Schwann cell. Mutations in this gene cause Charcot-Marie-Tooth neuoropathy, type 4F and Dejerine-Sottas neuropathy. [provided by RefSeq, Jul 2008]

PRX Gene-Disease associations (from GenCC):

• Charcot-Marie-Tooth disease type 4

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Charcot-Marie-Tooth disease type 4F

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics, Orphanet
• Charcot-Marie-Tooth disease type 3

  Inheritance: AD, AR Classification: MODERATE, SUPPORTIVE Submitted by: Orphanet, Ambry Genetics

ACMG classification

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181882.3. 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
	PRX	NM_181882.3	MANE Select	c.485A>C	p.Lys162Thr	missense	Exon 7 of 7	NP_870998.2	Q9BXM0-1
	PRX	NM_001411127.1		c.770A>C	p.Lys257Thr	missense	Exon 7 of 7	NP_001398056.1	A0A669KBF1
	PRX	NM_020956.2		c.*690A>C		3_prime_UTR	Exon 6 of 6	NP_066007.1	Q9BXM0-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRX	ENST00000324001.8	TSL:1 MANE Select	c.485A>C	p.Lys162Thr	missense	Exon 7 of 7	ENSP00000326018.6	Q9BXM0-1
	PRX	ENST00000291825.11	TSL:1	c.*690A>C		3_prime_UTR	Exon 6 of 6	ENSP00000291825.6	Q9BXM0-2
	PRX	ENST00000674005.2		c.770A>C	p.Lys257Thr	missense	Exon 7 of 7	ENSP00000501261.1	A0A669KBF1

Frequencies

GnomAD3 genomes AF: 0.00000658 AC: 1 AN: 152080 Hom.: 0 Cov.: 33

Gnomad AFR AF: 0.0000241

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00000481 AC: 7 AN: 1456714 Hom.: 0 Cov.: 35 AF XY: 0.00000690 AC XY: 5 AN XY: 724330

African (AFR) AF: 0.00 AC: 0 AN: 33446

American (AMR) AF: 0.00 AC: 0 AN: 43752

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25942

East Asian (EAS) AF: 0.00 AC: 0 AN: 39570

South Asian (SAS) AF: 0.00 AC: 0 AN: 85406

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52716

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5760

European-Non Finnish (NFE) AF: 0.00000631 AC: 7 AN: 1109994

Other (OTH) AF: 0.00 AC: 0 AN: 60128

GnomAD4 genome AF: 0.00000658 AC: 1 AN: 152080 Hom.: 0 Cov.: 33 AF XY: 0.0000135 AC XY: 1 AN XY: 74300

African (AFR) AF: 0.0000241 AC: 1 AN: 41414

American (AMR) AF: 0.00 AC: 0 AN: 15268

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3470

East Asian (EAS) AF: 0.00 AC: 0 AN: 5186

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10606

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67992

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000312 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	Charcot-Marie-Tooth disease type 4 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.63
BayesDel_addAF	Benign	-0.050	T
BayesDel_noAF	Benign	-0.31
CADD	Uncertain	26
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.58	D
Eigen	Uncertain	0.30
Eigen_PC	Uncertain	0.35
FATHMM_MKL	Uncertain	0.93	D
LIST_S2	Benign	0.74	T
M_CAP	Benign	0.018	T
MetaRNN	Uncertain	0.43	T
MetaSVM	Benign	-0.83	T
MutationAssessor	Benign	0.90	L
PhyloP100		4.0
PrimateAI	Uncertain	0.77	T
PROVEAN	Uncertain	-3.0	D
REVEL	Benign	0.13
Sift	Uncertain	0.023	D
Sift4G	Benign	0.18	T
Polyphen		0.92	P
Vest4		0.54
MutPred		0.30		Loss of ubiquitination at K162 (P = 0.0233)
MVP		0.43
MPC		0.62
ClinPred		0.91	D
GERP RS		4.9
Varity_R		0.26
gMVP		0.66
Mutation Taster		=59/41	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.020		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: rs879254072; hg19: chr19-40903774;