12-56100939-CAAAAAAAAAAAAAAAA-CAAAAAAAAAA

Variant names:

• chr12-56100939-CAAAAAA-C
• rs10536745
• NM_001982.4:c.3202-102_3202-97delAAAAAA

Variant summary

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

The NM_001982.4(ERBB3):​c.3202-102_3202-97delAAAAAA variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00152 in 302,438 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000020 (0 hom., cov: 0)
  • Exomes 𝑓: 0.0018 (0 hom.)
• Consequence: ERBB3 NM_001982.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.561
• Publications: 1 publications found

Genes affected

ERBB3 (HGNC:3431): (erb-b2 receptor tyrosine kinase 3) This gene encodes a member of the epidermal growth factor receptor (EGFR) family of receptor tyrosine kinases. This membrane-bound protein has a neuregulin binding domain but not an active kinase domain. It therefore can bind this ligand but not convey the signal into the cell through protein phosphorylation. However, it does form heterodimers with other EGF receptor family members which do have kinase activity. Heterodimerization leads to the activation of pathways which lead to cell proliferation or differentiation. Amplification of this gene and/or overexpression of its protein have been reported in numerous cancers, including prostate, bladder, and breast tumors. Alternate transcriptional splice variants encoding different isoforms have been characterized. One isoform lacks the intermembrane region and is secreted outside the cell. This form acts to modulate the activity of the membrane-bound form. Additional splice variants have also been reported, but they have not been thoroughly characterized. [provided by RefSeq, Jul 2008]

ERBB3 Gene-Disease associations (from GenCC):

• lethal congenital contracture syndrome 2

  Inheritance: AR Classification: STRONG, SUPPORTIVE Submitted by: Orphanet, G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• visceral neuropathy, familial, 1, autosomal recessive

  Inheritance: AR Classification: STRONG Submitted by: G2P
• Hirschsprung disease

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ERBB3	NM_001982.4	c.3202-102_3202-97delAAAAAA		intron_variant	Intron 26 of 27	ENST00000267101.8	NP_001973.2
ERBB3	XM_047428500.1	c.3025-102_3025-97delAAAAAA		intron_variant	Intron 26 of 27		XP_047284456.1
ERBB3	XM_047428501.1	c.3025-102_3025-97delAAAAAA		intron_variant	Intron 26 of 27		XP_047284457.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ERBB3	ENST00000267101.8	c.3202-121_3202-116delAAAAAA		intron_variant	Intron 26 of 27	1	NM_001982.4	ENSP00000267101.4

Frequencies

GnomAD3 genomes AF: 0.0000197 AC: 1 AN: 50668 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000994

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.00182 AC: 459 AN: 251770 Hom.: 0 AF XY: 0.00184 AC XY: 259 AN XY: 140508

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00198 AC: 12 AN: 6058

American (AMR) AF: 0.00167 AC: 24 AN: 14374

Ashkenazi Jewish (ASJ) AF: 0.00174 AC: 13 AN: 7472

East Asian (EAS) AF: 0.00382 AC: 41 AN: 10728

South Asian (SAS) AF: 0.000734 AC: 32 AN: 43602

European-Finnish (FIN) AF: 0.00171 AC: 19 AN: 11140

Middle Eastern (MID) AF: 0.00120 AC: 1 AN: 832

European-Non Finnish (NFE) AF: 0.00199 AC: 290 AN: 145488

Other (OTH) AF: 0.00224 AC: 27 AN: 12076

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000197 AC: 1 AN: 50668 Hom.: 0 Cov.: 0 AF XY: 0.0000451 AC XY: 1 AN XY: 22168

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 11010

American (AMR) AF: 0.00 AC: 0 AN: 3796

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 1642

East Asian (EAS) AF: 0.00 AC: 0 AN: 1536

South Asian (SAS) AF: 0.000994 AC: 1 AN: 1006

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 626

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 82

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 29812

Other (OTH) AF: 0.00 AC: 0 AN: 690

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.00 Hom.: 43

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.56

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs10536745; hg19: chr12-56494723;