chr7-138837980-G-C

Position:

• chr7-138837980-G-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001164665.2(KIAA1549):​c.5779C>G​(p.Leu1927Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★). Synonymous variant affecting the same amino acid position (i.e. L1927L) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 33)
• Consequence: KIAA1549 NM_001164665.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.17

Genes affected

KIAA1549 (HGNC:22219): (KIAA1549) The protein encoded by this gene belongs to the UPF0606 family. This gene has been found to be fused to the BRAF oncogene in many cases of pilocytic astrocytoma. The fusion results from 2Mb tandem duplications at 7q34. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Oct 2012]

TMEM213 (HGNC:27220): (transmembrane protein 213) Predicted to be integral component of membrane. [provided by Alliance of Genome Resources, Apr 2022]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
KIAA1549	NM_001164665.2	c.5779C>G	p.Leu1927Val	missense_variant	20/20	ENST00000422774.2
KIAA1549	NM_020910.3	c.5731C>G	p.Leu1911Val	missense_variant	20/20

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
KIAA1549	ENST00000422774.2	c.5779C>G	p.Leu1927Val	missense_variant	20/20	1	NM_001164665.2	A2
KIAA1549	ENST00000440172.5	c.5731C>G	p.Leu1911Val	missense_variant	20/20	1		P4
TMEM213	ENST00000413208.1	c.266G>C	p.Arg89Thr	missense_variant	3/3	3

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Nov 12, 2021

The c.5779C>G (p.L1927V) alteration is located in exon 20 (coding exon 20) of the KIAA1549 gene. This alteration results from a C to G substitution at nucleotide position 5779, causing the leucine (L) at amino acid position 1927 to be replaced by a valine (V). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.81
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Pathogenic	27
DANN	Uncertain	1.0
DEOGEN2	Benign	0.14	.;T
Eigen	Uncertain	0.47
Eigen_PC	Uncertain	0.57
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D;D
M_CAP	Benign	0.063	D
MetaRNN	Uncertain	0.60	D;D
MetaSVM	Benign	-0.60	T
MutationAssessor	Uncertain	2.1	.;M
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Uncertain	0.76	T
PROVEAN	Uncertain	-2.5	N;N
REVEL	Benign	0.27
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.70
MutPred		0.38		.;Gain of methylation at K1929 (P = 0.0752);
MVP		0.22
MPC		0.51
ClinPred		0.98	D
GERP RS		5.6
Varity_R		0.68
gMVP		0.51

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr7-138522725;