13-30467219-CTT-CTTT

Variant names:

• chr13-30467219-C-CT
• rs41369348
• NM_001313893.1:c.-14-3526dupA

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001313893.1(HMGB1):​c.-14-3526dupA variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000132 in 152,030 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.000013 (0 hom., cov: 32)
• Consequence: HMGB1 NM_001313893.1 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.145
• Publications: 4 publications found

Genes affected

HMGB1 (HGNC:4983): (high mobility group box 1) This gene encodes a protein that belongs to the High Mobility Group-box superfamily. The encoded non-histone, nuclear DNA-binding protein regulates transcription, and is involved in organization of DNA. This protein plays a role in several cellular processes, including inflammation, cell differentiation and tumor cell migration. Multiple pseudogenes of this gene have been identified. Alternative splicing results in multiple transcript variants that encode the same protein. [provided by RefSeq, Sep 2015]

HMGB1 Gene-Disease associations (from GenCC):

• intellectual disability

  Inheritance: AD Classification: LIMITED Submitted by: G2P

ENSG00000285840 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HMGB1	NM_001313893.1	c.-14-3526dupA		intron_variant	Intron 1 of 4		NP_001300822.1
HMGB1	NM_001370340.1	c.-14-3526dupA		intron_variant	Intron 1 of 4		NP_001357269.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HMGB1	ENST00000405805.5	c.-14-3526_-14-3525insA		intron_variant	Intron 1 of 4	2		ENSP00000384678.1
ENSG00000285840	ENST00000648233.2	n.176+927_176+928insT		intron_variant	Intron 1 of 3
ENSG00000285840	ENST00000819189.1	n.553-14026_553-14025insT		intron_variant	Intron 1 of 1
ENSG00000285840	ENST00000819190.1	n.504-13211_504-13210insT		intron_variant	Intron 1 of 2

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152030 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.000207

Gnomad FIN AF: 0.0000944

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.00

Gnomad OTH AF: 0.00

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

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152030 Hom.: 0 Cov.: 32 AF XY: 0.0000269 AC XY: 2 AN XY: 74262

African (AFR) AF: 0.00 AC: 0 AN: 41380

American (AMR) AF: 0.00 AC: 0 AN: 15254

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3466

East Asian (EAS) AF: 0.00 AC: 0 AN: 5196

South Asian (SAS) AF: 0.000207 AC: 1 AN: 4824

European-Finnish (FIN) AF: 0.0000944 AC: 1 AN: 10598

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 67998

Other (OTH) AF: 0.00 AC: 0 AN: 2086

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
PhyloP100		0.14

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: rs41369348; hg19: chr13-31041356;