ClinicalTrials.gg
Active, not recruitingNCT06566599Updated Apr 16, 2026

Preimplantation Genetic Testing for Aneuploidy (PGT-A) in Couples With Non-obstructive Azoospermia (NOA)

An observational study in Non-obstructive Azoospermia and Male Infertility, sponsored by Inception Fertility Research Institute, LLC. Active, not recruiting at 1 site in United States. Per ClinicalTrials.gov, last updated 2026-04-16.

Sponsored by Inception Fertility Research Institute, LLC · Observational

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Study type
Observational
Model
Cohort
Time perspective
Retrospective
Enrollment
400
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-15

Among 58 studies in Infertility, Male with a site in United States — 12 open to participants now, 16 under way, 1 of them phase 3. Infertility, Male · United States.

Planned enrollment
6th of 22
400 · median 215
Started
2024
with 2 others
Observational
22 of 58
4 open now
Primary completion
2026-12
later than 4 of 15 live
Registered
53rd of 58
by date

Among the 58 studies in Infertility, Male with a site in United States, this one is the 6th largest by planned enrollment of the 22 observational ones that give a count, is one of 3 that started in 2024, is one of 22 observational ones, reaches primary completion later than 4 of the 15 other live ones, and was the 53rd registered.

Infertility, Male

282 studies on the registry are indexed under Infertility, Male; 65 are open to participants now.

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Open to participants now

12 of the 58 studies in Infertility, Male with a site in United States are open now. Recruiting first, the newest first:

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Who these studies take

Of the 40 Infertility, Male studies recruiting now, 16 (40%) set no upper age limit and 24 (60%) stop at 75 or younger; 7 take children under 18; 14 take healthy volunteers.

This study: all sexes · no healthy volunteers.

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02

Study summary

Objective: To examine the rate of embryo aneuploidy in patients with non-obstructive azoospermia (NOA) who utilize in-vitro fertilization (IVF)/intracytoplasmic sperm injection (ICSI) and compare live birth rates with the utilization of preimplantation genetic testing for aneuploidy (PGT-A) vs non PGT-A.

Read the detailed description

Preimplantation genetic testing for aneuploidy (PGT-A) facilitates selection of euploid embryos for transfer and may improve outcomes in select couples when the female partner is 35 or older. While embryonic aneuploidy is known to be associated with maternal risk factors such as advanced age, the male factors contributing to aneuploidy are not as clear. Severe male factor infertility is associated with various genetic causes, including karyotypic abnormalities. One retrospective analysis of 668 infertile patients diagnosed with various nonobstructive spermatogenic defects using high resolution Giemsa banding chromosome analysis and/or fluorescence in situ hybridization revealed constitutional chromosomal abnormalities in 55 (8.2%) patients. The observed incidence was almost 20-fold greater than what is reported in healthy fertile men (0.37%). This study correlated cytogenetic aberrations with male reproductive phenotypes and noted that sex chromosome aneuploidy was the most common finding in azoospermia (AS) cases, accounting for about 9%, with Klinefelter syndrome (47, XXY karyotype and variants) accounting for 4% of all infertile males. Notably, the 47, XXY karyotype was detected at a considerably higher rate in men with AS vs oligospermia (OS) (27 of 668 or 9.1% vs 3 of 365 or 0.8%). Little is known about the impact of constitutional aneuploidy on embryonic aneuploidy rates after fertilization with surgically extracted sperm. Another study examined the impact of severe male factor infertility in 326 cycles on aneuploidy in embryos and found significant increases in embryo aneuploidy and higher mosaicism rates in cases using testicular sperm from patients with severe male factor infertility as compared to non-male factor controls. This study found that the statistically significant affected chromosomes were 2, 10, 11, 17, 21 and sex chromosomes. While sperm chromosomal aneuploidy are consistently higher in severe male factor infertility, the impact on IVF outcomes and potential benefits of PGT-A are unclear. Additionally, data on differences in aneuploidy rates between OA and NOA are mixed. Further research is warranted to help facilitate appropriate counseling of affected couples and better understand the role of PGT-A in severe male-factor infertility treatment. We will conduct a retrospective chart review to examine the rates of aneuploidy in embryos resulting from ICSI with surgically extracted sperm in patients with NOA and OA and characterize the chromosomes commonly affected in identified aneuploid embryos.

03

Conditions studied

  • Non-obstructive Azoospermia
  • Male Infertility

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Keywords

  • IVF
  • PGT-A
  • TESE
  • PESE
04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Couples who have undergone IVF/ICSI with or without pre-implantation genetic testing for aneuploidy (PGT-A) at a fertility clinic in The Prelude Network (US sites only).

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Couples who have undergone in vitro fertilization (IVF) with intracytoplasmic sperm injection (ICSI) with or without pre-implantation genetic testing for aneuploidy (PGT-A) at a fertility clinic in The Prelude Network (US sites only).
  • Male partner has diagnosis of non-obstructive azoospermia or obstructive azoospermia.
  • Male partner has undergone surgical sperm extraction.

Exclusion criteria

Exclusion Criteria:

  • not applicable
05

Study design

Observational model
Cohort
Time perspective
Retrospective
Enrollment
400 participants (estimated)
Patient registry
No
06

What researchers measure

Primary outcomes

  1. Aneuploidy rate

    Frequency of aneuploidy result in embryos

    Time frame: 1 year

  2. Chromosomes associated with aneuploidy

    Compare types of embryonic aneuploidy in male factor patients to advanced maternal age patients

    Time frame: 1 year

Secondary outcomes

  1. Live birth rate

    The frequency of live birth following embryo transfer.

    Time frame: 1 year

  2. Clinical pregnancy rate

    The frequency of intrauterine pregnancy (IUP) as confirmed by ultrasound post embryo transfer.

    Time frame: 1 year

  3. Fertilization rate

    The calculated rate of successful fertilization of egg, defined as presence of 2 pronuclei (2PN) on day 1 check post fertilization, to number of eggs where fertilization was attempted.

    Time frame: 1 year

07

Study locations

1 site
08

References and documents

Publications

  • Munne S, Kaplan B, Frattarelli JL, Child T, Nakhuda G, Shamma FN, Silverberg K, Kalista T, Handyside AH, Katz-Jaffe M, Wells D, Gordon T, Stock-Myer S, Willman S; STAR Study Group. Preimplantation genetic testing for aneuploidy versus morphology as selection criteria for single frozen-thawed embryo transfer in good-prognosis patients: a multicenter randomized clinical trial. Fertil Steril. 2019 Dec;112(6):1071-1079.e7. doi: 10.1016/j.fertnstert.2019.07.1346. Epub 2019 Sep 21. PubMed 31551155 ↗
  • Yatsenko AN, Yatsenko SA, Weedin JW, Lawrence AE, Patel A, Peacock S, Matzuk MM, Lamb DJ, Cheung SW, Lipshultz LI. Comprehensive 5-year study of cytogenetic aberrations in 668 infertile men. J Urol. 2010 Apr;183(4):1636-42. doi: 10.1016/j.juro.2009.12.004. Epub 2010 Feb 20. PubMed 20172548 ↗
  • Ravel C, Berthaut I, Bresson JL, Siffroi JP; Genetics Commission of the French Federation of CECOS. Prevalence of chromosomal abnormalities in phenotypically normal and fertile adult males: large-scale survey of over 10,000 sperm donor karyotypes. Hum Reprod. 2006 Jun;21(6):1484-9. doi: 10.1093/humrep/del024. Epub 2006 Feb 16. PubMed 16484311 ↗
  • Calogero AE, Burrello N, De Palma A, Barone N, D'Agata R, Vicari E. Sperm aneuploidy in infertile men. Reprod Biomed Online. 2003 Apr-May;6(3):310-7. doi: 10.1016/s1472-6483(10)61850-0. PubMed 12735865 ↗
  • Rodrigo L, Meseguer M, Mateu E, Mercader A, Peinado V, Bori L, Campos-Galindo I, Milan M, Garcia-Herrero S, Simon C, Rubio C. Sperm chromosomal abnormalities and their contribution to human embryo aneuploidy. Biol Reprod. 2019 Dec 24;101(6):1091-1101. doi: 10.1093/biolre/ioz125. PubMed 31318411 ↗
  • Asoglu MR, Celik C, Serefoglu EC, Findikli N, Bahceci M. Preimplantation genetic testing for aneuploidy in severe male factor infertility. Reprod Biomed Online. 2020 Oct;41(4):595-603. doi: 10.1016/j.rbmo.2020.06.015. Epub 2020 Jun 27. PubMed 32763130 ↗
  • Platteau P, Staessen C, Michiels A, Tournaye H, Van Steirteghem A, Liebaers I, Devroey P. Comparison of the aneuploidy frequency in embryos derived from testicular sperm extraction in obstructive and non-obstructive azoospermic men. Hum Reprod. 2004 Jul;19(7):1570-4. doi: 10.1093/humrep/deh306. Epub 2004 May 13. PubMed 15142999 ↗
  • Kahraman S, Sahin Y, Yelke H, Kumtepe Y, Tufekci MA, Yapan CC, Yesil M, Cetinkaya M. High rates of aneuploidy, mosaicism and abnormal morphokinetic development in cases with low sperm concentration. J Assist Reprod Genet. 2020 Mar;37(3):629-640. doi: 10.1007/s10815-019-01673-w. Epub 2020 Jan 4. PubMed 31901112 ↗

Individual participant data

Plan to share: No — IPD will not be available to other researchers.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Started Aug 2024 (actual). Primary completion is estimated for Dec 2026, 28 months after the start.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 20, 2024
First posted
Aug 22, 2024
StartActual
Aug 19, 2024
Primary completionEst.
Dec 2026
CompletionEst.
Apr 2027
Last update
Apr 16, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 16, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06566599
Responsible party
Sponsor
First posted
Aug 22, 2024
Start date
Aug 19, 2024
Primary completion
Dec 2026 (estimated)
Completion
Apr 2027 (estimated)
Last update
Apr 16, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Apr 2026. You cannot join it, but the record below documents what was studied.

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