RNASEH2B p.Leu52Leu

Variant names:

• chr13-50929491-C-C
• ENST00000336617.8:c.

Your query was ambiguous. Multiple possible variants found:

• chr13-50929492--
• chr13-50929494-G-A
• chr13-50929492-T-C
• chr13-50929492-TTG-CTT
• chr13-50929492-TTG-CTC
• chr13-50929492-TTG-CTA

Variant summary

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

The ENST00000336617.8(RNASEH2B):​c. variant causes a splice region, intron change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: RNASEH2B ENST00000336617.8 splice_region, intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.39
• Publications: 0 publications found

Genes affected

RNASEH2B (HGNC:25671): (ribonuclease H2 subunit B) RNase H2 is composed of a single catalytic subunit (A) and two non-catalytic subunits (B and C) and specifically degrades the RNA of RNA:DNA hybrids. The protein encoded by this gene is the non-catalytic B subunit of RNase H2, which is thought to play a role in DNA replication. Multiple transcript variants encoding different isoforms have been found for this gene. Defects in this gene are a cause of Aicardi-Goutieres syndrome type 2 (AGS2). [provided by RefSeq, Nov 2008]

RNASEH2B Gene-Disease associations (from GenCC):

• Aicardi-Goutieres syndrome 2

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae), Ambry Genetics
• RNASEH2B-related type 1 interferonopathy

  Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
• Aicardi-Goutieres syndrome

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• prostate cancer

  Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

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

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: ENST00000336617.8. 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
	RNASEH2B	NM_001411023.1		c.		intron	N/A	NP_001397952.1	A0A2R8Y883
	RNASEH2B	NM_001142279.2		c.		intron	N/A	NP_001135751.1	Q5TBB1-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RNASEH2B	ENST00000336617.8	TSL:1 MANE Select	c.		splice_region intron	N/A	ENSP00000337623.2	Q5TBB1-1
	RNASEH2B	ENST00000646960.1		c.		splice_region intron	N/A	ENSP00000496481.1	A0A2R8Y7R8
	RNASEH2B	ENST00000643159.1		c.		splice_region intron	N/A	ENSP00000495587.1	A0A2R8YEH2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		3.4

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

MaxEntScan Visualizer can be used to analyze the impact of this mutation on the neighboring sequence.

Other links and lift over

hg19: chr13-51503627;