14-58427638-G-T

Variant names:

• chr14-58427638-G-T
• rs1490434047
• ENST00000619416.4:c.-39+1G>T

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PVS1 PM2

The NM_001244189.2(KIAA0586):​c.9+1G>T variant causes a splice donor, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000145 in 1,383,364 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 2/2 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: KIAA0586 NM_001244189.2 splice_donor, intron
• Scores: Splicing: ADA: 0.00001460
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.393
• Publications: 0 publications found

Genes affected

KIAA0586 (HGNC:19960): (KIAA0586) This gene encodes a conserved centrosomal protein that functions in ciliogenesis and responds to hedgehog signaling. Mutations in this gene causes Joubert syndrome 23. Alternative splicing results in multiple transcript variants and protein isoforms. [provided by RefSeq, Aug 2016]

TIMM9 (HGNC:11819): (translocase of inner mitochondrial membrane 9) TIMM9 belongs to a family of evolutionarily conserved proteins that are organized in heterooligomeric complexes in the mitochondrial intermembrane space. These proteins mediate the import and insertion of hydrophobic membrane proteins into the mitochondrial inner membrane.[supplied by OMIM, Apr 2004]

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PVS1: Splicing +-2 bp (donor or acceptor) variant, LoF is a know mechanism of disease, No cryptic splice site detected. Exon removal results in frameshift change.
• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001244189.2. 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
	KIAA0586	NM_001244189.2		c.9+1G>T		splice_donor intron	N/A	NP_001231118.1	Q9BVV6-3
	KIAA0586	NM_001244190.2		c.-39+1G>T		splice_donor intron	N/A	NP_001231119.1	Q9BVV6-1
	KIAA0586	NM_001244192.2		c.-57+1G>T		splice_donor intron	N/A	NP_001231121.1	Q9BVV6-4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	KIAA0586	ENST00000619416.4	TSL:1	c.-39+1G>T		splice_donor intron	N/A	ENSP00000478083.1	Q9BVV6-1
	KIAA0586	ENST00000423743.7	TSL:1	c.-57+1G>T		splice_donor intron	N/A	ENSP00000399427.3	Q9BVV6-4
	TIMM9	ENST00000922995.1		c.-361C>A		5_prime_UTR	Exon 1 of 5	ENSP00000593054.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000145 AC: 2 AN: 1383364 Hom.: 0 Cov.: 30 AF XY: 0.00000293 AC XY: 2 AN XY: 682576

African (AFR) AF: 0.00 AC: 0 AN: 31594

American (AMR) AF: 0.00 AC: 0 AN: 35700

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 25180

East Asian (EAS) AF: 0.00 AC: 0 AN: 35732

South Asian (SAS) AF: 0.00 AC: 0 AN: 79234

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 33462

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5692

European-Non Finnish (NFE) AF: 0.00000185 AC: 2 AN: 1078870

Other (OTH) AF: 0.00 AC: 0 AN: 57900

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.53	T
BayesDel_noAF	Benign	-0.99
CADD	Benign	0.22
DANN	Benign	0.73
Eigen	Benign	-0.45
Eigen_PC	Benign	-0.92
FATHMM_MKL	Benign	0.047	N
PhyloP100		-0.39
GERP RS		-8.4
PromoterAI		-0.20	Neutral
Mutation Taster		=87/13	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000015
dbscSNV1_RF	Benign	0.0

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

Other links and lift over

dbSNP: rs1490434047; hg19: chr14-58894356;