6-45547304-G-C

Variant names:

• chr6-45547304-G-C
• rs104893994
• NM_001024630.4:c.1565G>C

Variant summary

Our verdict is Uncertain significance. The variant received 5 ACMG points: 5P and 0B. PM2 PM4 PP5

The NM_001024630.4(RUNX2):​c.1565G>C​(p.Ter522Serext*?) variant causes a stop lost change involving the alteration of a 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 Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: RUNX2 NM_001024630.4 stop_lost
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 7.76
• Publications: 3 publications found

Genes affected

RUNX2 (HGNC:10472): (RUNX family transcription factor 2) This gene is a member of the RUNX family of transcription factors and encodes a nuclear protein with an Runt DNA-binding domain. This protein is essential for osteoblastic differentiation and skeletal morphogenesis and acts as a scaffold for nucleic acids and regulatory factors involved in skeletal gene expression. The protein can bind DNA both as a monomer or, with more affinity, as a subunit of a heterodimeric complex. Two regions of potential trinucleotide repeat expansions are present in the N-terminal region of the encoded protein, and these and other mutations in this gene have been associated with the bone development disorder cleidocranial dysplasia (CCD). Transcript variants that encode different protein isoforms result from the use of alternate promoters as well as alternate splicing. [provided by RefSeq, Jul 2016]

RUNX2 Gene-Disease associations (from GenCC):

• cleidocranial dysplasia 1

  Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, G2P, Labcorp Genetics (formerly Invitae)
• metaphyseal dysplasia-maxillary hypoplasia-brachydacty syndrome

  Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM4: Stoplost variant in NM_001024630.4 Downstream stopcodon found after 586 codons.
• PP5: Variant 6-45547304-G-C is Pathogenic according to our data. Variant chr6-45547304-G-C is described in ClinVar as Pathogenic. ClinVar VariationId is 9305.Status of the report is no_assertion_criteria_provided, 0 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001024630.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RUNX2	NM_001024630.4	MANE Select	c.1565G>C	p.Ter522Serext*?	stop_lost	Exon 9 of 9	NP_001019801.3
	RUNX2	NM_001369405.1		c.1523G>C	p.Ter508Serext*?	stop_lost	Exon 7 of 7	NP_001356334.1
	RUNX2	NM_001015051.4		c.1499G>C	p.Ter500Serext*?	stop_lost	Exon 8 of 8	NP_001015051.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RUNX2	ENST00000647337.2	MANE Select	c.1565G>C	p.Ter522Serext*?	stop_lost	Exon 9 of 9	ENSP00000495497.1
	RUNX2	ENST00000359524.7	TSL:1	c.1523G>C	p.Ter508Serext*?	stop_lost	Exon 7 of 7	ENSP00000352514.5
	RUNX2	ENST00000625924.1	TSL:1	c.1457G>C	p.Ter486Serext*?	stop_lost splice_region	Exon 6 of 6	ENSP00000485863.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Cleidocranial dysostosis Pathogenic:1

May 01, 2002

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.13	T
BayesDel_noAF	Benign	-0.42
CADD	Benign	17
DANN	Benign	0.78
Eigen	Pathogenic	1.2
Eigen_PC	Pathogenic	1.1
FATHMM_MKL	Pathogenic	0.99	D
PhyloP100		7.8
Vest4		0.46
GERP RS		5.6
Mutation Taster		=2/198	disease causing (ClinVar)

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: rs104893994; hg19: chr6-45515041;