DeCure's autonomous Rare AI scientist is researching a drug-repurposing hypothesis for spermatogenic failure 50 — screening already-approved drugs against its 1-gene Open Targets disease module to publish open-access research. Research is fast; the path to publication is funded in milestone stages.
Disease moduleSpermatogenic failure 50 maps to a 1-gene Open Targets module — the target space DeCure's AI scientist screens approved drugs against.
DeCure.ai methodSignature reversal (LINCS) plus network proximity (STRING) rank already-approved drugs likely to perturb this module — the same engine that produces DeCure.ai's repurposing hypotheses.
Repurposing thesisScreening approved medicines against this disease module, then publishing the evidence for the strongest candidate. Known pharmacology and human exposure data make the first question sharper — they do not establish safety or efficacy in a new indication.
Research record
01
ResearchComing soon
Candidate research + dossier — target rationale, drug-repurposing thesis and evidence pack.proof: Published dossier + on-chain hash
02
ValidationComing soon
In-vitro biological validation at a contract research org (CRO).proof: CRO contract + in-vitro report
03
Peer review & paperComing soon
Peer-reviewed paper published open-access (preprint + journal).proof: DOI + open-access link + on-chain hash
Current lead
No approved-drug candidate for spermatogenic failure 50 is corroborated in the literature DeepSearch retrieved. Some conditions are managed with non-pharmacological care — a device, surgery or physical therapy — rather than a medicine; that may be the case here, or the literature we found may simply be too sparse yet to support a drug-repurposing angle.
Molecular view
X-ray repair cross complementing 2 (XRCC2) — XRCC2 is one of the genes genetically linked to this disease in Open Targets — shown as context, not as a drug target we're pursuing: no approved-drug candidate for this disease is yet corroborated in the literature we found.
Loading structure…
helix sheet adpdrag to rotate · scroll to zoom
RCSB Protein Data Bank · entry 8FAZ · 2.3 Å · ligand ADENOSINE-5'-DIPHOSPHATE (ADP). Experimental structure, not a prediction.
What the evidence adds up to
A 1988 review of 8879 vasectomies performed by one physician over 24 years found 97 failures of all types. In a subgroup of 5331 men who returned for at least two postoperative semen tests, there were 32 early overt failures (0.60%) and 61 technical failures (1.14%) involving persistence of small numbers of spermatozoa. Four late overt failures (0.08%) were discovered because of a pregnancy, each occurring at least four years after two azoospermic test results. Four failures were due to missed vasa deferentia; the rest were attributed to recanalisation.
A 2020 case-control study examined GPR56 gene expression in peripheral blood mononuclear cells of 10 patients with Klinefelter syndrome and 10 controls. GPR56 was down-regulated by -2081-fold (q-value <0.05) in patients with Klinefelter syndrome compared to controls, confirmed by QRT-PCR. The authors state the possible contribution of this down-regulation to spermatogenic failure in Klinefelter syndrome is worthy of further exploration.
A 2013 conference abstract describes a study performed mainly to optimise an array comparative genomic hybridisation protocol on single human sperm, not to determine percentages of alterations in normal and pathological conditions. The authors note future application might give information on sperm chromosome aberrations in infertile men, carriers of karyotype anomalies, men with advanced age, subjects treated with chemotherapy, and partners of couples with repeated miscarriage or repeated assisted reproduction failure.
What is still missing is any direct evidence linking GPR56 down-regulation to spermatogenic failure in men without Klinefelter syndrome, any therapeutic intervention targeting this pathway, and any trial design or patient stratification that would test whether such an intervention could restore fertility. The vasectomy data are surgical, not medical, and the 2013 abstract explicitly states it was not designed to provide clinical percentages. No drug is mentioned in any of these abstracts.
Evidence
Retrieved by DeepSearch across 234,678,978 indexed works and resolved on OpenAlex — ranked by citations, including the results that did not work.
JAMA · 1988 · 46 citations
The lurking sperm. A review of failures in 8879 vasectomies performed by one physician
AbstractVasectomy techniques and failure rates vary among surgeons, and the criteria for failure are not often clearly defined. To help establish a yardstick for comparative purposes, a series of 8879 consecutive vasectomies performed with uniform technique over 24 years was reviewed. A subgroup of 5331 men who had returned for at least two postoperative semen tests--the study group--was used for follow-up analysis. Failures were defined as early or late and also were categorized as overt or technical according to the numbers, motility, or persistence of the remaining spermatozoa. There were 97 failures of all types, including 32 (0.60%) early and overt failures and 61 (1.14%) technical failures that involved the persistence of small numbers of spermatozoa, possibly of no significance. Four (0.08%) late overt failures were also seen; each of these was discovered as a result of a pregnancy, and each occurred at least four years after two azoospermic test results. Of the 97 failures, four were recognized as due to missed vasa deferentia, and the remainder were attributed to recanalization. Whether improved and reproducible failure rates can be consistently obtained by other techniques is not yet clear.
GPR56 gene down-regulation in patients with Klinefelter syndrome: a candidate for infertility?
AbstractBACKGROUND: The etiology of azoospermia in patients with Klinefelter Syndrome (KS) is still unknown. The protein codified by the G protein-couple receptor 56 (GPR56) belongs to the adhesion family of G protein-coupled receptors (GPRs). Its mutations are involved in the pathogenesis of intellectual disability and, according to animal studies, infertility. As the expression of GPR56 in patients with KS has not been investigated so far, this study was undertaken with the purpose of evaluating its expression in peripheral blood mononuclear cells (PBMCs) of patients with KS and normal controls. METHODS: This age-matched case-control study was performed in 10 patients with KS and 10 controls. Patients and controls underwent to blood sampling for next-generation sequencing (NGS) analysis, and differentially expressed mRNAs were identified using DESeq2 v.1.12. QRT-PCR was used to validate the results obtained by NGS analysis. TaqMan Gene Expression Assay primers were used to carry out the real-time PCR analysis for GPR56. RESULTS: GPR56 was down-regulated by -2081-fold (q-value <0.05) in PBMCs of patients with KS compared to controls. NGS data were confirmed by QRT-PCR. CONCLUSIONS: The possible contribution of the GPR56 gene down-regulation in the pathogenesis of spermatogenic failure in patients with KS is worthy to be further explored.
Human Reproduction · 2013 · 0 citations · open access
Session 69: Clinical endocrinology
AbstractLimitations, reason for caution: This study was mainly performed to optimize an aCGH protocol on human single sperm, not to have percentage of alterations in normal and pathological conditions. Wider implications of the findings: Future application of this method might give important information on the biology and pathophysiology of spermatogenesis and sperm chromosome aberrations in normal subjects and in patients at higher risk of producing unbalanced sperm, such as infertile men, carriers of karyotype anomalies, men with advanced age, subjects treated with chemotherapy, and partners of couples with repeated miscarriage and repeated failure during assisted reproduction techniques. Study funding/competing interest(s): University of Padova/no competing interests
Disease module: DeepOracle (Open Targets). Structures: RDKit from PubChem SMILES. Literature: retrieved by DeepSearch across 234,678,978 indexed works (targeted per-candidate search), resolved on OpenAlex.
DeCure is a research and publication project, not medical advice and not a treatment. "DeCure for X" describes a research goal, not a claim that a cure exists. Backing a cure is a contribution to fund the research — it is not an investment, and confers no yield, royalty, equity or IP ownership. Papers are published open-access by the DeCure.ai DAO.
