NT-NOA - Novel Treatment of Some Men With Non-Obstructive Azoospermia

Summary

This clinical interventional study aims to assess whether treatment with denosumab in combination with letrozole can improve sperm production in infertile men with non-obstructive azoospermia selected by serum anti-mullerian hormone (AMH) as a positive predictive biomarker.

Timeline

Start

2025-03-01

Primary completion

2026-08

Completion

2026-08

Publications

• Background Huynh AL, Baker ST, Stewardson AJ, Johnson DF. Denosumab-associated hypocalcaemia: incidence, severity and patient characteristics in a tertiary hospital setting. Pharmacoepidemiol Drug Saf. 2016 Nov;25(11):1274-1278. doi: 10.1002/pds.4045. Epub 2016 Jun 3.
• Background Skakkebaek NE, Rajpert-De Meyts E, Main KM. Testicular dysgenesis syndrome: an increasingly common developmental disorder with environmental aspects. Hum Reprod. 2001 May;16(5):972-8. doi: 10.1093/humrep/16.5.972.
• Background Toulis KA, Anastasilakis AD. Increased risk of serious infections in women with osteopenia or osteoporosis treated with denosumab. Osteoporos Int. 2010 Nov;21(11):1963-4. doi: 10.1007/s00198-009-1145-1. Epub 2009 Dec 15. No abstract available.
• Background Anastasilakis AD, Toulis KA, Goulis DG, Polyzos SA, Delaroudis S, Giomisi A, Terpos E. Efficacy and safety of denosumab in postmenopausal women with osteopenia or osteoporosis: a systematic review and a meta-analysis. Horm Metab Res. 2009 Oct;41(10):721-9. doi: 10.1055/s-0029-1224109. Epub 2009 Jun 17.
• Background Bone HG, Chapurlat R, Brandi ML, Brown JP, Czerwinski E, Krieg MA, Mellstrom D, Radominski SC, Reginster JY, Resch H, Ivorra JA, Roux C, Vittinghoff E, Daizadeh NS, Wang A, Bradley MN, Franchimont N, Geller ML, Wagman RB, Cummings SR, Papapoulos S. The effect of three or six years of denosumab exposure in women with postmenopausal osteoporosis: results from the FREEDOM extension. J Clin Endocrinol Metab. 2013 Nov;98(11):4483-92. doi: 10.1210/jc.2013-1597. Epub 2013 Aug 26.
• Background Lamy O, Stoll D, Aubry-Rozier B, Rodriguez EG. Stopping Denosumab. Curr Osteoporos Rep. 2019 Feb;17(1):8-15. doi: 10.1007/s11914-019-00502-4.
• Background Uebelhart B, Rizzoli R, Ferrari SL. Retrospective evaluation of serum CTX levels after denosumab discontinuation in patients with or without prior exposure to bisphosphonates. Osteoporos Int. 2017 Sep;28(9):2701-2705. doi: 10.1007/s00198-017-4080-6. Epub 2017 May 24.
• Background Bekker PJ, Holloway DL, Rasmussen AS, Murphy R, Martin SW, Leese PT, Holmes GB, Dunstan CR, DePaoli AM. A single-dose placebo-controlled study of AMG 162, a fully human monoclonal antibody to RANKL, in postmenopausal women. J Bone Miner Res. 2004 Jul;19(7):1059-66. doi: 10.1359/JBMR.040305. Epub 2004 Mar 1.
• Background Blomberg Jensen M, Andreassen CH, Jorgensen A, Nielsen JE, Juel Mortensen L, Boisen IM, Schwarz P, Toppari J, Baron R, Lanske B, Juul A. RANKL regulates male reproductive function. Nat Commun. 2021 Apr 23;12(1):2450. doi: 10.1038/s41467-021-22734-8.
• Background Bussiere JL, Pyrah I, Boyce R, Branstetter D, Loomis M, Andrews-Cleavenger D, Farman C, Elliott G, Chellman G. Reproductive toxicity of denosumab in cynomolgus monkeys. Reprod Toxicol. 2013 Dec;42:27-40. doi: 10.1016/j.reprotox.2013.07.018. Epub 2013 Jul 22.
• Background Sohn W, Lee E, Kankam MK, Egbuna O, Moffat G, Bussiere J, Padhi D, Ng E, Kumar S, Slatter JG. An open-label study in healthy men to evaluate the risk of seminal fluid transmission of denosumab to pregnant partners. Br J Clin Pharmacol. 2016 Feb;81(2):362-9. doi: 10.1111/bcp.12798. Epub 2015 Dec 5.
• Background Boonen S, Adachi JD, Man Z, Cummings SR, Lippuner K, Torring O, Gallagher JC, Farrerons J, Wang A, Franchimont N, San Martin J, Grauer A, McClung M. Treatment with denosumab reduces the incidence of new vertebral and hip fractures in postmenopausal women at high risk. J Clin Endocrinol Metab. 2011 Jun;96(6):1727-36. doi: 10.1210/jc.2010-2784. Epub 2011 Mar 16.
• Background Papapoulos S, Chapurlat R, Libanati C, Brandi ML, Brown JP, Czerwinski E, Krieg MA, Man Z, Mellstrom D, Radominski SC, Reginster JY, Resch H, Roman Ivorra JA, Roux C, Vittinghoff E, Austin M, Daizadeh N, Bradley MN, Grauer A, Cummings SR, Bone HG. Five years of denosumab exposure in women with postmenopausal osteoporosis: results from the first two years of the FREEDOM extension. J Bone Miner Res. 2012 Mar;27(3):694-701. doi: 10.1002/jbmr.1479.
• Background Polyzos SA, Singhellakis PN, Naot D, Adamidou F, Malandrinou FC, Anastasilakis AD, Polymerou V, Kita M. Denosumab treatment for juvenile Paget's disease: results from two adult patients with osteoprotegerin deficiency ("Balkan" mutation in the TNFRSF11B gene). J Clin Endocrinol Metab. 2014 Mar;99(3):703-7. doi: 10.1210/jc.2013-3762. Epub 2014 Jan 16.
• Background Schwarz P, Rasmussen AQ, Kvist TM, Andersen UB, Jorgensen NR. Paget's disease of the bone after treatment with Denosumab: a case report. Bone. 2012 May;50(5):1023-5. doi: 10.1016/j.bone.2012.01.020.
• Background Anastasilakis AD, Toulis KA, Polyzos SA, Terpos E. RANKL inhibition for the management of patients with benign metabolic bone disorders. Expert Opin Investig Drugs. 2009 Aug;18(8):1085-102. doi: 10.1517/13543780903048929.
• Background Makras P, Polyzos SA, Papatheodorou A, Kokkoris P, Chatzifotiadis D, Anastasilakis AD. Parathyroid hormone changes following denosumab treatment in postmenopausal osteoporosis. Clin Endocrinol (Oxf). 2013 Oct;79(4):499-503. doi: 10.1111/cen.12188. Epub 2013 Apr 1.
• Background Anastasilakis AD, Toulis KA, Polyzos SA, Anastasilakis CD, Makras P. Long-term treatment of osteoporosis: safety and efficacy appraisal of denosumab. Ther Clin Risk Manag. 2012;8:295-306. doi: 10.2147/TCRM.S24239. Epub 2012 Jun 19.
• Background Cummings SR, San Martin J, McClung MR, Siris ES, Eastell R, Reid IR, Delmas P, Zoog HB, Austin M, Wang A, Kutilek S, Adami S, Zanchetta J, Libanati C, Siddhanti S, Christiansen C; FREEDOM Trial. Denosumab for prevention of fractures in postmenopausal women with osteoporosis. N Engl J Med. 2009 Aug 20;361(8):756-65. doi: 10.1056/NEJMoa0809493. Epub 2009 Aug 11.
• Background Kwiecinski GG, Petrie GI, DeLuca HF. Vitamin D is necessary for reproductive functions of the male rat. J Nutr. 1989 May;119(5):741-4. doi: 10.1093/jn/119.5.741.
• Background Uhland AM, Kwiecinski GG, DeLuca HF. Normalization of serum calcium restores fertility in vitamin D-deficient male rats. J Nutr. 1992 Jun;122(6):1338-44. doi: 10.1093/jn/122.6.1338.
• Background Blomberg Jensen M. Vitamin D and male reproduction. Nat Rev Endocrinol. 2014 Mar;10(3):175-86. doi: 10.1038/nrendo.2013.262. Epub 2014 Jan 14.

Drugs

Indications