chr6-45505519-T-C

Variant names:

• chr6-45505519-T-C
• rs7750470
• NM_001024630.4:c.860-6727T>C

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001024630.4(RUNX2):​c.860-6727T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.247 in 151,998 control chromosomes in the GnomAD database, including 5,439 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.25 (5439 hom., cov: 31)
• Consequence: RUNX2 NM_001024630.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.966
• Publications: 8 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: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.98).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.4 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RUNX2	NM_001024630.4	c.860-6727T>C		intron_variant	Intron 6 of 8	ENST00000647337.2	NP_001019801.3
RUNX2	NM_001369405.1	c.818-6727T>C		intron_variant	Intron 4 of 6		NP_001356334.1
RUNX2	NM_001015051.4	c.860-6727T>C		intron_variant	Intron 6 of 7		NP_001015051.3
RUNX2	NM_001278478.2	c.818-6727T>C		intron_variant	Intron 4 of 5		NP_001265407.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RUNX2	ENST00000647337.2	c.860-6727T>C		intron_variant	Intron 6 of 8		NM_001024630.4	ENSP00000495497.1

Frequencies

GnomAD3 genomes AF: 0.247 AC: 37504 AN: 151880 Hom.: 5420 Cov.: 31

Gnomad AFR AF: 0.404

Gnomad AMI AF: 0.148

Gnomad AMR AF: 0.213

Gnomad ASJ AF: 0.198

Gnomad EAS AF: 0.230

Gnomad SAS AF: 0.0774

Gnomad FIN AF: 0.134

Gnomad MID AF: 0.209

Gnomad NFE AF: 0.195

Gnomad OTH AF: 0.217

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.247 AC: 37565 AN: 151998 Hom.: 5439 Cov.: 31 AF XY: 0.239 AC XY: 17783 AN XY: 74328

African (AFR) AF: 0.405 AC: 16764 AN: 41408

American (AMR) AF: 0.213 AC: 3248 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.198 AC: 687 AN: 3466

East Asian (EAS) AF: 0.230 AC: 1189 AN: 5172

South Asian (SAS) AF: 0.0768 AC: 370 AN: 4818

European-Finnish (FIN) AF: 0.134 AC: 1415 AN: 10588

Middle Eastern (MID) AF: 0.218 AC: 64 AN: 294

European-Non Finnish (NFE) AF: 0.195 AC: 13244 AN: 67956

Other (OTH) AF: 0.213 AC: 449 AN: 2104

Alfa AF: 0.210 Hom.: 2724

Bravo AF: 0.263

Asia WGS AF: 0.133 AC: 461 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.98
CADD	Benign	0.20
DANN	Benign	0.38
PhyloP100		-0.97
Mutation Taster		=100/0	polymorphism (auto)

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: rs7750470; hg19: chr6-45473256;