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Study identifier: NCT06841861 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Spermatogonial Differentiation Via Testicular Organoid

Condition: Infertility, Male · Gene Abnormality · Sterility, Male  ·  Sponsor: CellARTs Inc.

PhasePhase 1/Phase 2
Planned participants100
Who can joinMale, 18 Years to 60 Years
Healthy volunteersYes

About this study

Purpose: This clinical trial aims to explore the potential for human sperm production in vitro by sustaining a laboratory-cultured adult testicular environment. It also seeks to identify genetic factors contributing to human sterility and failed spermatogenesis. The study's primary objectives include: 1. Identifying genomic markers associated with sterility and failed spermatogenesis. 2. Developing an ex vivo (outside the body) testis "organ-on-a-chip" ("iTestis") to support stem cell cultivation. 3. Determining whether human spermatogenesis can be re-created in vitro using stem cells nurtured in the iTestis model. Study Description: Researchers will analyze the genomic profiles of fertile and sterile male participants to map genetic abnormalities associated with sterility. Using testicular and skin tissue samples from participants, spermatogonial stem cells and pluripotent stem cells will be isolated and utilized to construct the ex vivo iTestis. This system will integrate genomic insights and prior research to foster human spermatogenesis outside the body. Participant Involvement: Participants will provide the following samples: * Blood sample for serum analysis. * A skin tissue biopsy. * Testicular tissue, obtained through fine needle aspiration (FNA) or testicular sperm extraction (TESE), as part of a routine procedure. All procedures will be conducted by the principal investigator and qualified research staff, ensuring participant safety and adherence to ethical …

This description comes directly from the study's public registry record.

Talk to the study team

Erica S Godart, BS  ·  4244579202  ·  ericagodart@gmail.com

Constance John, PhD  ·  4153054888  ·  connie.john@gmail.com

Always discuss trial participation with your own doctor first.

Locations (1)

The Turek ClinicSan Francisco, California, United StatesRecruiting

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Source record: clinicaltrials.gov/study/NCT06841861