chr2-44942161-C-T

Variant names:

• chr2-44942161-C-T
• rs1666588321
• NM_005413.4:c.57C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Moderate BP6_Moderate

The NM_005413.4(SIX3):​c.57C>T​(p.Phe19Phe) variant causes a synonymous change. 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 Likely benign (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: SIX3 NM_005413.4 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 3.62
• Publications: 0 publications found

Genes affected

SIX3 (HGNC:10889): (SIX homeobox 3) This gene encodes a member of the sine oculis homeobox transcription factor family. The encoded protein plays a role in eye development. Mutations in this gene have been associated with holoprosencephaly type 2. [provided by RefSeq, Oct 2009]

ENSG00000225156 (HGNC:):

SIX3-AS1 (HGNC:40532): (SIX3 antisense RNA 1)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.37).
• BP6: Variant 2-44942161-C-T is Benign according to our data. Variant chr2-44942161-C-T is described in ClinVar as Likely_benign. ClinVar VariationId is 1990303.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005413.4. 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
	SIX3	NM_005413.4	MANE Select	c.57C>T	p.Phe19Phe	synonymous	Exon 1 of 2	NP_005404.1	O95343

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	SIX3	ENST00000260653.5	TSL:1 MANE Select	c.57C>T	p.Phe19Phe	synonymous	Exon 1 of 2	ENSP00000260653.3	O95343
	ENSG00000225156	ENST00000760330.1		n.135+7785C>T		intron	N/A
	SIX3-AS1	ENST00000760560.1		n.389-1328G>A		intron	N/A

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Holoprosencephaly 2 (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.37
CADD	Benign	13
DANN	Uncertain	0.98
PhyloP100		3.6
PromoterAI		-0.064	Neutral
Mutation Taster		=99/1	polymorphism

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: rs1666588321; hg19: chr2-45169300;