DAZ2

Chr Y

deleted in azoospermia 2

Also known as: pDP1678

This gene is a member of the DAZ gene family and is a candidate for the human Y-chromosomal azoospermia factor (AZF). Its expression is restricted to premeiotic germ cells, particularly in spermatogonia. It encodes an RNA-binding protein that is important for spermatogenesis. Four copies of this gene are found on chromosome Y within palindromic duplications; one pair of genes is part of the P2 palindrome and the second pair is part of the P1 palindrome. Each gene contains a 2.4 kb repeat including a 72-bp exon, called the DAZ repeat; the number of DAZ repeats is variable and there are several variations in the sequence of the DAZ repeat. Each copy of the gene also contains a 10.8 kb region that may be amplified; this region includes five exons that encode an RNA recognition motif (RRM) domain. This gene contains one copy of the 10.8 kb repeat. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

OMIMResearchGenerating clinical summary…

Primary Disease Associations & Inheritance

UniProtSpermatogenic failure Y-linked 2

Clinical highlights

Interpreting a novel variant
This gene is strongly intolerant of loss-of-function variation in the population, so LoF variants warrant close attention. No curated mechanism annotation is available — see the mechanism card for the computational prediction and its caveats.Based on population constraint only.
0
Active trials
2
Pubs (1 yr)
P/LP submissions
P/LP missense
1.89
LOEUF
Multiple*
Mechanism· predicted

Population Genetics & Constraint

gnomAD v4 — loss-of-function & missense intolerance

Tolerant — LoF & missense variants common in population
LoF Constraint?
1.89LOEUF
pLI 0.288
Z-score 0.25
OE 0.00 (0.001.89)
Tolerant

Highly tolerant — LoF variants common in population

Missense Constraint?
-0.17Z-score
OE missense 1.61 (0.321.92)
1 obs / 0.6 exp
Tolerant

Tolerant to missense variation

Observed / Expected Ratios?
LoF OE?0.00 (0.001.89)
00.351.4
Missense OE?1.61 (0.321.92)
00.61.4
Synonymous OE?0.00
01.21.6
LoF obs/exp: 0 / 0.1Missense obs/exp: 1 / 0.6Syn Z: 0.34

ClinVar

No ClinVar data available.

Protein Context — Lollipop Plot

DAZ2 · protein map & ClinVar variants

Showing all ClinVar variants across the protein. Search a specific variant to highlight its position.

Clinical Trials

Active and recruiting trials from ClinicalTrials.gov

No active trials found for this gene.

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