17-6435121-G-C

Variant names:

• chr17-6435121-G-C
• rs188246267
• ENST00000574506.5:c.-17C>G

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The ENST00000574506.5(AIPL1):​c.-17C>G variant causes a 5 prime UTR premature start codon gain change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000753 in 1,461,748 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000075 (0 hom.)
• Consequence: AIPL1 ENST00000574506.5 5_prime_UTR_premature_start_codon_gain
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.292
• Publications: 0 publications found

Genes affected

AIPL1 (HGNC:359): (aryl hydrocarbon receptor interacting protein like 1) Leber congenital amaurosis (LCA) is the most severe inherited retinopathy with the earliest age of onset and accounts for at least 5% of all inherited retinal diseases. Affected individuals are diagnosed at birth or in the first few months of life with nystagmus, severely impaired vision or blindness and an abnormal or flat electroretinogram. The photoreceptor/pineal-expressed gene, AIPL1, encoding aryl-hydrocarbon interacting protein-like 1, is located within the LCA4 candidate region. The encoded protein contains three tetratricopeptide motifs, consistent with chaperone or nuclear transport activity. Mutations in this gene may cause approximately 20% of recessive LCA. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

AIPL1 Gene-Disease associations (from GenCC):

• AIPL1-related retinopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Leber congenital amaurosis 4

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), G2P
• Leber congenital amaurosis

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.82).

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000574506.5. 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
	AIPL1	NM_014336.5	MANE Select	c.-17C>G		5_prime_UTR	Exon 1 of 6	NP_055151.3
	AIPL1	NM_001285399.3		c.-17C>G		5_prime_UTR	Exon 1 of 6	NP_001272328.1	Q7Z3H1
	AIPL1	NM_001285400.3		c.-17C>G		5_prime_UTR	Exon 1 of 6	NP_001272329.1	Q9NZN9-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	AIPL1	ENST00000574506.5	TSL:1	c.-17C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 6	ENSP00000458456.1	Q7Z3H1
	AIPL1	ENST00000570466.5	TSL:1	c.-17C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 6	ENSP00000461287.1	Q9NZN9-4
	AIPL1	ENST00000576776.5	TSL:1	c.-17C>G		5_prime_UTR_premature_start_codon_gain	Exon 1 of 6	ENSP00000460827.1	Q9NZN9-5

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000753 AC: 11 AN: 1461748 Hom.: 0 Cov.: 31 AF XY: 0.00000963 AC XY: 7 AN XY: 727172

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 AN: 44718

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26124

East Asian (EAS) AF: 0.00 AC: 0 AN: 39692

South Asian (SAS) AF: 0.00 AC: 0 AN: 86246

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53402

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00000899 AC: 10 AN: 1111928

Other (OTH) AF: 0.0000166 AC: 1 AN: 60390

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.82
CADD	Benign	4.0
DANN	Benign	0.56
PhyloP100		0.29
PromoterAI		-0.17	Neutral

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		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: rs188246267; hg19: chr17-6338441;