Genetic Variant KITLG:c.130-13_130-11dupTTT (chr12-88532513-C-CAAA) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

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

The NM_000899.5(KITLG):c.130-13_130-11dupTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000857 in 1,166,892 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 0.0 ( 0 hom., cov: 30)

Exomes 𝑓: 0.0000086 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

KITLG
NM_000899.5 intron

Scores

Not classified

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -0.318

Publications

0 publications found

Variant links:

Genes affected

KITLG (HGNC:6343): (KIT ligand) This gene encodes the ligand of the tyrosine-kinase receptor encoded by the KIT locus. This ligand is a pleiotropic factor that acts in utero in germ cell and neural cell development, and hematopoiesis, all believed to reflect a role in cell migration. In adults, it functions pleiotropically, while mostly noted for its continued requirement in hematopoiesis. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]

KITLG Gene-Disease associations (from GenCC):

autosomal dominant nonsyndromic hearing loss 69
Inheritance: AD Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), PanelApp Australia
hyperpigmentation with or without hypopigmentation, familial progressive
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
autosomal dominant nonsyndromic hearing loss
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial progressive hyper- and hypopigmentation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
familial progressive hyperpigmentation
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Waardenburg syndrome type 2
Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: G2P, Orphanet
nonsyndromic genetic hearing loss
Inheritance: AD Classification: LIMITED Submitted by: ClinGen
Waardenburg syndrome, IIa 2F
Inheritance: Unknown, AR Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics

KITLG links:

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ACMG classification

Classification was made for transcript

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
KITLG	NM_000899.5 link	c.130-13_130-11dupTTT		intron_variant	Intron 2 of 9	ENST00000644744.1	NP_000890.1	P21583-1A0A024RBC0
KITLG	NM_003994.6 link	c.130-13_130-11dupTTT		intron_variant	Intron 2 of 8		NP_003985.2	P21583-2A0A024RBF5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
KITLG	ENST00000644744.1 link	c.130-11_130-10insTTT		intron_variant	Intron 2 of 9		NM_000899.5	ENSP00000495951.1		P21583-1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

141102

Hom.:

Cov.:

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:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000857

AC:

AN:

1166892

Hom.:

Cov.:

AF XY:

0.00000864

AC XY:

AN XY:

579008

show subpopulations

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

African (AFR)

AF:

0.00

AC:

AN:

25650

American (AMR)

AF:

0.00

AC:

AN:

32130

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

19480

East Asian (EAS)

AF:

0.00

AC:

AN:

29168

South Asian (SAS)

AF:

0.00

AC:

AN:

65170

European-Finnish (FIN)

AF:

0.00

AC:

AN:

41134

Middle Eastern (MID)

AF:

0.000224

AC:

AN:

4458

European-Non Finnish (NFE)

AF:

0.00000997

AC:

AN:

902432

Other (OTH)

AF:

0.00

AC:

AN:

47270

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.255

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

141102

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

68350

African (AFR)

AF:

0.00

AC:

AN:

38222

American (AMR)

AF:

0.00

AC:

AN:

14070

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3318

East Asian (EAS)

AF:

0.00

AC:

AN:

4856

South Asian (SAS)

AF:

0.00

AC:

AN:

4506

European-Finnish (FIN)

AF:

0.00

AC:

AN:

8548

Middle Eastern (MID)

AF:

0.00

AC:

AN:

290

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

64494

Other (OTH)

AF:

0.00

AC:

AN:

1934

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.32

Splicing

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

Publications

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12-88532513-CAAAA-CAAAAAAA

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over