NM_004316.4:c.169_186delCAGCAGCAGCAGCAGCAG

Variant names:

• chr12-102958393-CGCAGCAGCAGCAGCAGCA-C
• rs3832799
• NM_004316.4:c.169_186delCAGCAGCAGCAGCAGCAG

Variant summary

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

The NM_004316.4(ASCL1):​c.169_186delCAGCAGCAGCAGCAGCAG​(p.Gln57_Gln62del) variant causes a conservative inframe deletion change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000109 in 1,507,064 control chromosomes in the GnomAD database, with no homozygous occurrence. It is difficult to determine the true allele frequency of this variant because it is of type DEL_BIG, and the frequency of such variant types in population databases may be underestimated and unreliable. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.00010 (0 hom., cov: 0)
  • Exomes 𝑓: 0.00011 (0 hom.)
• Consequence: ASCL1 NM_004316.4 conservative_inframe_deletion
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.809
• Publications: 15 publications found

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]

PAH Gene-Disease associations (from GenCC):

• phenylketonuria

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P, ClinGen, Myriad Women’s Health
• classic phenylketonuria

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• maternal phenylketonuria

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• mild hyperphenylalaninemia

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• mild phenylketonuria

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet
• tetrahydrobiopterin-responsive hyperphenylalaninemia/phenylketonuria

  Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004316.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ASCL1	NM_004316.4	MANE Select	c.169_186delCAGCAGCAGCAGCAGCAG	p.Gln57_Gln62del	conservative_inframe_deletion	Exon 1 of 2	NP_004307.2
	PAH	NM_001354304.2		c.-312_-295delTGCTGCTGCTGCTGCTGC		5_prime_UTR	Exon 1 of 14	NP_001341233.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ASCL1	ENST00000266744.4	TSL:1 MANE Select	c.169_186delCAGCAGCAGCAGCAGCAG	p.Gln57_Gln62del	conservative_inframe_deletion	Exon 1 of 2	ENSP00000266744.3
	PAH	ENST00000547319.1	TSL:4	n.-1_17delTGCTGCTGCTGCTGCTGC		non_coding_transcript_exon	Exon 1 of 3
	PAH	ENST00000551337.5	TSL:3	c.-312_-295delTGCTGCTGCTGCTGCTGC		upstream_gene	N/A	ENSP00000447620.1

Frequencies

GnomAD3 genomes AF: 0.0000999 AC: 15 AN: 150120 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.000147

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000210

Gnomad FIN AF: 0.000394

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000594

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000111 AC: 150 AN: 1356944 Hom.: 0 AF XY: 0.000117 AC XY: 78 AN XY: 669236

African (AFR) AF: 0.000210 AC: 6 AN: 28512

American (AMR) AF: 0.000297 AC: 10 AN: 33690

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 24016

East Asian (EAS) AF: 0.0000300 AC: 1 AN: 33382

South Asian (SAS) AF: 0.000211 AC: 16 AN: 75996

European-Finnish (FIN) AF: 0.000510 AC: 21 AN: 41212

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4084

European-Non Finnish (NFE) AF: 0.0000783 AC: 83 AN: 1059584

Other (OTH) AF: 0.000230 AC: 13 AN: 56468

GnomAD4 genome AF: 0.0000999 AC: 15 AN: 150120 Hom.: 0 Cov.: 0 AF XY: 0.000123 AC XY: 9 AN XY: 73222

African (AFR) AF: 0.000147 AC: 6 AN: 40886

American (AMR) AF: 0.00 AC: 0 AN: 15138

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3456

East Asian (EAS) AF: 0.00 AC: 0 AN: 5070

South Asian (SAS) AF: 0.000210 AC: 1 AN: 4768

European-Finnish (FIN) AF: 0.000394 AC: 4 AN: 10154

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 312

European-Non Finnish (NFE) AF: 0.0000594 AC: 4 AN: 67382

Other (OTH) AF: 0.00 AC: 0 AN: 2052

Alfa AF: 0.00 Hom.: 277

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.81
Mutation Taster		=170/30	disease causing (fs/PTC)

Splicing

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

Other links and lift over

dbSNP: rs3832799; hg19: chr12-103352171;