NM_181458.4:c.77C>G

Variant names:

• chr2-222298539-G-C
• rs1259174817
• NM_181458.4:c.77C>G

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP2

The NM_181458.4(PAX3):​c.77C>G​(p.Pro26Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,451,480 control chromosomes in the GnomAD database, with no homozygous occurrence. 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. P26L) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: PAX3 NM_181458.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 9.40
• Publications: 0 publications found

Genes affected

PAX3 (HGNC:8617): (paired box 3) This gene is a member of the paired box (PAX) family of transcription factors. Members of the PAX family typically contain a paired box domain and a paired-type homeodomain. These genes play critical roles during fetal development. Mutations in paired box gene 3 are associated with Waardenburg syndrome, craniofacial-deafness-hand syndrome, and alveolar rhabdomyosarcoma. The translocation t(2;13)(q35;q14), which represents a fusion between PAX3 and the forkhead gene, is a frequent finding in alveolar rhabdomyosarcoma. Alternative splicing results in transcripts encoding isoforms with different C-termini. [provided by RefSeq, Jul 2008]

CCDC140 (HGNC:26514): (CCDC140 long non-coding RNA) This gene encodes a protein that appears to be restricted to select higher primate species. This protein contains a C-terminal coiled-coil domain, which is a versatile structural motif consisting of multiple amphipathic alpha-helices that twist around each other to form a supercoil. [provided by RefSeq, Aug 2011]

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. The gene has 47 curated pathogenic missense variants (we use a threshold of 10). The gene has 9 curated benign missense variants. Gene score misZ: 1.618 (below the threshold of 3.09). Trascript score misZ: 1.7934 (below the threshold of 3.09). GenCC associations: The gene is linked to Waardenburg syndrome type 3, Waardenburg syndrome type 1, Waardenburg syndrome, craniofacial-deafness-hand syndrome.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_181458.4. 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
	PAX3	NM_181458.4	MANE Select	c.77C>G	p.Pro26Arg	missense	Exon 1 of 9	NP_852123.1	P23760-7
	PAX3	NM_181459.4		c.77C>G	p.Pro26Arg	missense	Exon 1 of 10	NP_852124.1	P23760-8
	PAX3	NM_001127366.3		c.77C>G	p.Pro26Arg	missense	Exon 1 of 9	NP_001120838.1	P23760-6

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PAX3	ENST00000392070.7	TSL:1 MANE Select	c.77C>G	p.Pro26Arg	missense	Exon 1 of 9	ENSP00000375922.3	P23760-7
	PAX3	ENST00000409551.7	TSL:1	c.77C>G	p.Pro26Arg	missense	Exon 1 of 9	ENSP00000386750.3	P23760-6
	PAX3	ENST00000336840.11	TSL:1	c.77C>G	p.Pro26Arg	missense	Exon 1 of 9	ENSP00000338767.5	P23760-5

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000138 AC: 2 AN: 1451480 Hom.: 0 Cov.: 30 AF XY: 0.00000139 AC XY: 1 AN XY: 721214

African (AFR) AF: 0.00 AC: 0 AN: 33190

American (AMR) AF: 0.00 AC: 0 AN: 43704

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25896

East Asian (EAS) AF: 0.0000256 AC: 1 AN: 39094

South Asian (SAS) AF: 0.00 AC: 0 AN: 84512

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 51726

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5732

European-Non Finnish (NFE) AF: 9.03e-7 AC: 1 AN: 1107740

Other (OTH) AF: 0.00 AC: 0 AN: 59886

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.73
BayesDel_addAF	Pathogenic	0.29	D
BayesDel_noAF	Pathogenic	0.17
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.70	D
Eigen	Uncertain	0.29
Eigen_PC	Uncertain	0.34
FATHMM_MKL	Pathogenic	1.0	D
LIST_S2	Uncertain	0.87	D
M_CAP	Pathogenic	0.75	D
MetaRNN	Uncertain	0.68	D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Benign	0.97	L
PhyloP100		9.4
PrimateAI	Pathogenic	0.90	D
PROVEAN	Uncertain	-3.6	D
REVEL	Pathogenic	0.73
Sift	Uncertain	0.0010	D
Sift4G	Uncertain	0.0020	D
Polyphen		0.87	P
Vest4		0.61
MutPred		0.50		Gain of MoRF binding (P = 0.0055)
MVP		0.81
MPC		2.6
ClinPred		0.99	D
GERP RS		4.3
PromoterAI		0.15	Neutral
Varity_R		0.66
gMVP		0.94
Mutation Taster		=74/26	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.050		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: rs1259174817; hg19: chr2-223163258;