19-45765518-C-G

Position:

• chr19-45765518-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_175875.5(SIX5):​c.2203G>C​(p.Glu735Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: SIX5 NM_175875.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.46

Genes affected

SIX5 (HGNC:10891): (SIX homeobox 5) The protein encoded by this gene is a homeodomain-containing transcription factor that appears to function in the regulation of organogenesis. This gene is located downstream of the dystrophia myotonica-protein kinase gene. Mutations in this gene are a cause of branchiootorenal syndrome type 2. [provided by RefSeq, Jul 2009]

(HGNC:):

ACMG classification

Verdict is Uncertain_significance. Variant got 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.20195433).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SIX5	NM_175875.5	c.2203G>C	p.Glu735Gln	missense_variant	3/3	ENST00000317578.7	NP_787071.3

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
SIX5	ENST00000317578.7	c.2203G>C	p.Glu735Gln	missense_variant	3/3	1	NM_175875.5	ENSP00000316842	P1
	ENST00000559756.1	n.734C>G		non_coding_transcript_exon_variant	1/2	3
SIX5	ENST00000560160.1	c.*413G>C		3_prime_UTR_variant	2/2	2		ENSP00000453239
SIX5	ENST00000560168.1	c.*1629G>C		3_prime_UTR_variant	3/3	4		ENSP00000453189

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 29

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Dec 06, 2023

This sequence change replaces glutamic acid, which is acidic and polar, with glutamine, which is neutral and polar, at codon 735 of the SIX5 protein (p.Glu735Gln). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with SIX5-related conditions. ClinVar contains an entry for this variant (Variation ID: 1933833). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be tolerated. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Benign	0.0088	T
BayesDel_noAF	Benign	-0.23
CADD	Uncertain	24
DANN	Uncertain	1.0
DEOGEN2	Benign	0.14	T;T;T
Eigen	Benign	0.14
Eigen_PC	Uncertain	0.25
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Benign	0.77	.;T;T
M_CAP	Uncertain	0.14	D
MetaRNN	Benign	0.20	T;T;T
MetaSVM	Uncertain	0.28	D
MutationAssessor	Benign	0.34	N;N;.
MutationTaster	Benign	0.90	D;D
PrimateAI	Uncertain	0.61	T
PROVEAN	Benign	-0.65	.;N;.
REVEL	Uncertain	0.34
Sift	Uncertain	0.0030	.;D;.
Sift4G	Benign	0.26	.;T;T
Polyphen		0.76	P;P;.
Vest4		0.24, 0.16
MutPred		0.056		Gain of relative solvent accessibility (P = 0.1894);Gain of relative solvent accessibility (P = 0.1894);.;
MVP		0.88
MPC		0.11
ClinPred		0.38	T
GERP RS		4.5
Varity_R		0.17
gMVP		0.22

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: chr19-46268776;