NM_181458.4:c.1420+104G>A

Variant names:

• chr2-222201840-C-T
• rs142988099
• NM_181458.4:c.1420+104G>A

Variant summary

Our verdict is Benign. The variant received -14 ACMG points: 0P and 14B. BP4_Strong BP6_Moderate BS1 BS2

The NM_181458.4(PAX3):​c.1420+104G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00224 in 1,599,036 control chromosomes in the GnomAD database, including 64 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.012 (30 hom., cov: 31)
  • Exomes 𝑓: 0.0012 (34 hom.)
• Consequence: PAX3 NM_181458.4 intron
• Clinical Significance: Benign criteria provided, single submitter B:2
• Conservation: PhyloP100: -1.28
• 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]

PAX3 Gene-Disease associations (from GenCC):

• craniofacial-deafness-hand syndrome

  Inheritance: AD, Unknown Classification: DEFINITIVE, SUPPORTIVE, LIMITED Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• Waardenburg syndrome

  Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
• Waardenburg syndrome type 1

  Inheritance: AR, AD Classification: DEFINITIVE, STRONG, MODERATE, SUPPORTIVE Submitted by: PanelApp Australia, G2P, Orphanet, Labcorp Genetics (formerly Invitae)
• Waardenburg syndrome type 3

  Inheritance: AR, AD Classification: STRONG, SUPPORTIVE, LIMITED Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Benign. The variant received -14 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.98).
• BP6: Variant 2-222201840-C-T is Benign according to our data. Variant chr2-222201840-C-T is described in ClinVar as [Benign]. Clinvar id is 334555.Status of the report is criteria_provided_single_submitter, 1 stars.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.0117 (1776/152052) while in subpopulation AFR AF = 0.0406 (1682/41436). AF 95% confidence interval is 0.039. There are 30 homozygotes in GnomAd4. There are 839 alleles in the male GnomAd4 subpopulation. Median coverage is 31. This position passed quality control check.
• BS2: High Homozygotes in GnomAd4 at 30 AR,AD,Unknown gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PAX3	NM_181458.4	c.1420+104G>A		intron_variant	Intron 8 of 8	ENST00000392070.7	NP_852123.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PAX3	ENST00000392070.7	c.1420+104G>A		intron_variant	Intron 8 of 8	1	NM_181458.4	ENSP00000375922.3

Frequencies

GnomAD3 genomes AF: 0.0116 AC: 1768 AN: 151938 Hom.: 30 Cov.: 31

Gnomad AFR AF: 0.0405

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00446

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000208

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00633

Gnomad NFE AF: 0.000147

Gnomad OTH AF: 0.00670

GnomAD4 exome AF: 0.00124 AC: 1801 AN: 1446984 Hom.: 34 Cov.: 37 AF XY: 0.00112 AC XY: 803 AN XY: 719550

African (AFR) AF: 0.0455 AC: 1489 AN: 32758

American (AMR) AF: 0.00205 AC: 88 AN: 42864

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25688

East Asian (EAS) AF: 0.00 AC: 0 AN: 39506

South Asian (SAS) AF: 0.000204 AC: 17 AN: 83280

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52844

Middle Eastern (MID) AF: 0.000961 AC: 5 AN: 5202

European-Non Finnish (NFE) AF: 0.0000670 AC: 74 AN: 1105126

Other (OTH) AF: 0.00214 AC: 128 AN: 59716

GnomAD4 genome AF: 0.0117 AC: 1776 AN: 152052 Hom.: 30 Cov.: 31 AF XY: 0.0113 AC XY: 839 AN XY: 74330

African (AFR) AF: 0.0406 AC: 1682 AN: 41436

American (AMR) AF: 0.00445 AC: 68 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3472

East Asian (EAS) AF: 0.00 AC: 0 AN: 5172

South Asian (SAS) AF: 0.00 AC: 0 AN: 4796

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10582

Middle Eastern (MID) AF: 0.00685 AC: 2 AN: 292

European-Non Finnish (NFE) AF: 0.000147 AC: 10 AN: 67998

Other (OTH) AF: 0.00663 AC: 14 AN: 2112

Alfa AF: 0.00867 Hom.: 2

Bravo AF: 0.0137

Asia WGS AF: 0.00202 AC: 7 AN: 3476

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, single submitter

Submissions by phenotype

Craniofacial-deafness-hand syndrome Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Waardenburg syndrome Benign:1

Jan 12, 2018

Illumina Laboratory Services, Illumina

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.98
CADD	Benign	0.10
DANN	Benign	0.36
PhyloP100		-1.3
Mutation Taster		=100/0	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: rs142988099; hg19: chr2-223066559;