chr12-102958393-C-CGCAGCAGCAGCAGCAGCAGCAGCA

Position:

• chr12-102958393-C-CGCAGCAGCAGCAGCAGCAGCAGCA

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BS2

The NM_004316.4(ASCL1):​c.163_186dup​(p.Gln55_Gln62dup) variant causes a inframe insertion change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00032 (0 hom., cov: 0)
  • Exomes 𝑓: 0.000083 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: ASCL1 NM_004316.4 inframe_insertion
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.219

Genes affected

ASCL1 (HGNC:738): (achaete-scute family bHLH transcription factor 1) This gene encodes a member of the basic helix-loop-helix (BHLH) family of transcription factors. The protein activates transcription by binding to the E box (5'-CANNTG-3'). Dimerization with other BHLH proteins is required for efficient DNA binding. This protein plays a role in the neuronal commitment and differentiation and in the generation of olfactory and autonomic neurons. Mutations in this gene may contribute to the congenital central hypoventilation syndrome (CCHS) phenotype in rare cases. [provided by RefSeq, Jul 2008]

PAH (HGNC:8582): (phenylalanine hydroxylase) This gene encodes a member of the biopterin-dependent aromatic amino acid hydroxylase protein family. The encoded phenylalanine hydroxylase enzyme hydroxylates phenylalanine to tyrosine and is the rate-limiting step in phenylalanine catabolism. Deficiency of this enzyme activity results in the autosomal recessive disorder phenylketonuria. [provided by RefSeq, Aug 2017]

ACMG classification

Verdict is Likely_benign. Variant got -4 ACMG points.

• BS2: High AC in GnomAd4 at 48 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
ASCL1	NM_004316.4	c.163_186dup	p.Gln55_Gln62dup	inframe_insertion	1/2	ENST00000266744.4
PAH	NM_001354304.2	c.-295_-294insTGCTGCTGCTGCTGCTGCTGCTGC		5_prime_UTR_variant	1/14

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
ASCL1	ENST00000266744.4	c.163_186dup	p.Gln55_Gln62dup	inframe_insertion	1/2	1	NM_004316.4	P1
PAH	ENST00000547319.1	n.17_18insTGCTGCTGCTGCTGCTGCTGCTGC		non_coding_transcript_exon_variant	1/3	4
PAH	ENST00000551337.5			upstream_gene_variant		3

Frequencies

GnomAD3 genomes AF: 0.000320 AC: 48 AN: 150118 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00105

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000198

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: 0.0000148

Gnomad OTH AF: 0.000487

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000825 AC: 112 AN: 1356926 Hom.: 0 Cov.: 17 AF XY: 0.0000687 AC XY: 46 AN XY: 669228

Gnomad4 AFR exome AF: 0.00137

Gnomad4 AMR exome AF: 0.000119

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.000120

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000538

Gnomad4 OTH exome AF: 0.000124

GnomAD4 genome AF: 0.000320 AC: 48 AN: 150208 Hom.: 0 Cov.: 0 AF XY: 0.000245 AC XY: 18 AN XY: 73324

Gnomad4 AFR AF: 0.00105

Gnomad4 AMR AF: 0.000198

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.00

Gnomad4 SAS AF: 0.00

Gnomad4 FIN AF: 0.00

Gnomad4 NFE AF: 0.0000148

Gnomad4 OTH AF: 0.000483

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Splicing

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

Publications

LitVar

Other links and lift over

dbSNP: rs3832799; hg19: chr12-103352171;