Evidence map›Paper›PMID 17412880›Full record

ArticleJournal of medical genetics2007

Partial deletions are associated with an increased risk of complete deletion in AZFc: a new insight into the role of partial AZFc deletions in male infertility.

Feng Zhang, Chuncheng Lu, Zheng Li, Pingxing Xie, Yankai Xia, Xiaobin Zhu, Bin Wu, Xiaoyun Cai, Xiaofeng Wang, Ji Qian and 2 more

Abstract readComparative Study
In one paragraph

Article in Journal of medical genetics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 43 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
43citing papers in PubMed, 2 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

43 citing papers in PubMed, 2 syntheses or guidelines pooled it.

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  12. Natural Transmission of b2/b3 Subdeletion or Duplication to Expanded Y Chromosome Microdeletions.Medical science monitor : international medical journal of experimental and clinical research · 2018
    Article
  13. Genetics of male infertility.Nature reviews. Urology · 2018
    Review
  14. Genetics of the human Y chromosome and its association with male infertility.Reproductive biology and endocrinology : RB&E · 2018
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

12 authors.

Feng ZhangMOE Key Laboratory of Contemporary Anthropology and Center for Evolutionary Biology, School of Life Sciences and Institutes of Biomedical Sciences, Fudan University, Shanghai, China.
Chuncheng Lu
Zheng Li
Pingxing Xie
Yankai Xia
Xiaobin Zhu
Bin Wu
Xiaoyun Cai
Xiaofeng Wang
Ji Qian
Xinru Wang
Li Jin

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe AZFc region on the human Y chromosome has been found to be functionally important in spermatogenesis. Complete AZFc deletion is one of the most frequent causes of male infertility and the roles of partial AZFc deletions (gr/gr and b2/b3 deletions) in spermatogenesis are controversial.

methodsTo further study the roles of partial AZFc deletions in spermatogenic impairment and the relationship between complete and partial AZFc deletions, these deletions were typed and quantitative analysis of DAZ gene copies and Y chromosome haplogrouping were performed for seven pedigrees of complete AZFc deletion carriers, comprising 296 infertile and 280 healthy Chinese men.

resultsNeither the gr/gr nor the b2/b3 deletion was found to be associated with spermatogenic failure. In one pedigree, a complete AZFc deletion was observed to result from the gr/gr deletion, suggesting that complete deletions of AZFc can be preceded by partial deletions. In addition, a new gr/gr-deleted Y haplogroup Q1 was identified and the reported fixation of the b2/b3 deletion in haplogroup N confirmed. The frequency of complete AZFc deletion in haplogroups Q1 and N was significantly higher than that in the other haplogroupsm with fewer partial deletions. Duplications of DAZ gene copies were also observed in this study.

conclusionsTo date, these observations comprise the first evidence showing that partial AZFc deletions can increase the risk of complete AZFc deletion. The susceptibility of partial AZFc deletions to complete AZFc deletion deserves further examination, especially in the populations or Y haplogroups abundant in partial AZFc deletions.

Indexed as

Chromosome DeletionChinaChromosomes, Human, YCluster AnalysisDeleted in Azoospermia 1 ProteinGene ComponentsHaplotypesHumansInfertility, MaleMalePedigreeRNA-Binding ProteinsSpermatogenesisDAZ1 protein, humanDeleted in Azoospermia 1 ProteinRNA-Binding Proteins

Identifiers

PMID17412880
PMCPMC2598009

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.