NM_020227.4:c.301+40_301+44dupTTTTT

Variant names:

• chr5-23510049-A-ATTTTT
• rs34033521
• NM_020227.4:c.301+40_301+44dupTTTTT

Variant summary

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

The NM_020227.4(PRDM9):​c.301+40_301+44dupTTTTT variant causes a intron change involving the alteration of a non-conserved nucleotide. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: not found (cov: 0)
  • Exomes 𝑓: 0.000017 (0 hom.)
  • Failed GnomAD Quality Control
• Consequence: PRDM9 NM_020227.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -1.47
• Publications: 0 publications found

Genes affected

PRDM9 (HGNC:13994): (PR/SET domain 9) The protein encoded by this gene is a zinc finger protein with histone methyltransferase activity that catalyzes histone H3 lysine 4 trimethylation (H3K4me3) during meiotic prophase. This protein contains multiple domains, including a Kruppel-associated box (KRAB) domain, an SSX repression domain (SSXRD), a PRD1-BF1 and RIZ homologous region, a subclass of SET (PR/SET) domain, and a tandem array of C2H2 zinc fingers. The zinc finger array recognizes a short sequence motif, leading to local H3K4me3, and meiotic recombination hotspot activity. The observed allelic variation alters the DNA-binding sequence specificity of the protein, resulting in distinct meiotic recombination hotspots amongst individuals and populations. Multiple alternate alleles of this gene have been described. [provided by RefSeq, Jul 2015]

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020227.4. 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
	PRDM9	NM_020227.4	MANE Select	c.301+40_301+44dupTTTTT		intron	N/A	NP_064612.2	Q9NQV7
	PRDM9	NM_001376900.1		c.301+40_301+44dupTTTTT		intron	N/A	NP_001363829.1	Q9NQV7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PRDM9	ENST00000296682.4	TSL:1 MANE Select	c.301+22_301+23insTTTTT		intron	N/A	ENSP00000296682.4	Q9NQV7
	PRDM9	ENST00000502755.6	TSL:4	c.301+22_301+23insTTTTT		intron	N/A	ENSP00000425471.2	Q9NQV7
	PRDM9	ENST00000635252.1	TSL:5	c.124+22_124+23insTTTTT		intron	N/A	ENSP00000489227.1	A0A0U1RQY2

Frequencies

GnomAD3 genomes Cov.: 0

GnomAD4 exome Data not reliable, filtered out with message: AS_VQSR AF: 0.0000174 AC: 20 AN: 1146776 Hom.: 0 Cov.: 0 AF XY: 0.0000192 AC XY: 11 AN XY: 573194

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 25126

American (AMR) AF: 0.0000673 AC: 2 AN: 29722

Ashkenazi Jewish (ASJ) AF: 0.0000495 AC: 1 AN: 20198

East Asian (EAS) AF: 0.00 AC: 0 AN: 31826

South Asian (SAS) AF: 0.0000573 AC: 4 AN: 69764

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40396

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4204

European-Non Finnish (NFE) AF: 0.0000137 AC: 12 AN: 878234

Other (OTH) AF: 0.0000211 AC: 1 AN: 47306

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000000000000555111), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome Cov.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
PhyloP100		-1.5

Splicing

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

Other links and lift over

dbSNP: rs34033521; hg19: chr5-23510158;