Clinical trials

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Condition / disease
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Status: Not yet recruiting

The GranStone Trial

This study will investigate whether treatment with empagliflozin or losartan can reduce the risk of kidney stone formation in patients with paraffin disease, a condition caused by the injection of paraffin oil into muscle tissue for cosmetic muscle enlargement. Paraffin disease can lead to chronic inflammation, disturbances in calcium regulation, high blood calcium levels, kidney stones, and impaired kidney function. Previous studies from Herlev-Gentofte Hospital have shown that kidney stones occur in nearly half of affected patients, while approximately one-third develop reduced kidney function. Current treatment primarily consists of high-dose corticosteroids, which can reduce blood calcium levels but cause substantial adverse effects and may not adequately control the underlying disease process. Both empagliflozin and losartan are widely used medications with documented kidney-protective effects in other chronic kidney diseases. This randomized clinical trial will evaluate whether either treatment can prevent kidney stone formation and slow kidney-related complications in patients with paraffin disease. The purpose of this study is to determine whether treatment with empagliflozin or losartan can prevent kidney stone formation and improve kidney health in patients with paraffin disease.

Participants needed: 100
Trial details
Phase: Phase 2, Phase 3Age: 18-70Biological sex: MaleType: InterventionalSponsor: Martin Blomberg JensenUpdated: Sep 18, 2026Locations: 1
Eligibility criteria

Signed informed consent by participant [+3]

eGFR < 30 ml/min [+8]

Status: Recruiting

Evaluation of the Role of Luteinizing Hormone (LH) and Human Chorionic Gonadotropin (hCG) in Adult Patients Undergoing Assessment for Endocrine Disorders

Hormones are chemical messengers that help regulate many functions in the body. As women go through menopause, and as men age, levels of certain reproductive hormones change significantly. One of these hormones, luteinizing hormone (LH), increases substantially after menopause and may also rise in some men. Another hormone, human chorionic gonadotropin (hCG), is best known as the hormone of pregnancy, but small amounts can also be detected in some postmenopausal women and older men. Recent research suggests that LH and hCG may have effects beyond reproduction. These hormones may influence bone health, body weight, kidney function, thyroid function, and adrenal gland function. However, little is known about their importance in patients with endocrine disorders. The purpose of this study is to investigate whether blood levels of LH and hCG are associated with the presence, severity, and long-term outcomes of endocrine diseases. The study will include adult patients undergoing evaluation for hormonal disorders. Blood samples will be analyzed for LH, hCG, and other relevant hormones and biomarkers. Participants will also be followed through national health registries to examine whether these hormone levels are associated with future health outcomes. The results of this study may improve our understanding of how LH and hCG affect the body and help determine whether these hormones can be used as biomarkers to improve the diagnosis and management of endocrine diseases.

Participants needed: 20,000
Trial details
Age: 18-90Biological sex: AllType: ObservationalSponsor: Martin Blomberg JensenUpdated: Sep 17, 2026Locations: 1
Eligibility criteria

Patients referred to or patients actively followed at the Department of Endocrin... [+1]

Lacking mental capacity to provide informed consent

Status: Not yet recruiting

A Novel Aromatase Inhibitor, Leflutrozole, for Treatment of Non-Obstructive Azoospermia

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

Participants needed: 15
Trial details
Phase: Phase 1, Phase 2Age: 18-55Biological sex: MaleType: InterventionalSponsor: Martin Blomberg JensenUpdated: May 6, 2026Locations: 1
Eligibility criteria

Signed informed consent by participant [+6]

Klinefelter or other major genetic conditions including large deletions on sex c... [+17]

Status: Recruiting

COMPASS - COpenhagen MenoPAuSe Study

During menopause, estrogen levels drop while the level of another hormone - LH (luteinizing hormone) substantially increases. This hormonal shift is linked to bone Loss and other complications. Estrogen therapy can help, but some women avoid it due to the increased risk of blood clots and cancer. This project will investigate whether blocking LH could offer a safe alternative to alleviate symptoms and complications of menopause since it is known from previous research that high LH levels contribute to both bone deterioration and metabolic issues. The goal is to explore new treatment options that can improve health and quality of life for women both during and after menopause. This randomized clinical trial is a single center, sponsor-investigator-initiated single-blinded 8 weeks clinical trial with four parallel groups comparing the effect of an gonadotropin releasing hormone(GnRH)-analog with placebo, and with two additional arms given estrogen or testosterone on change on bone health in postmenopausal women with moderate-to-severe symptoms.

Participants needed: 192
Trial details
Phase: Phase 2Age: 40-65Biological sex: FemaleType: InterventionalSponsor: Martin Blomberg JensenUpdated: Mar 2, 2026Locations: 1
Eligibility criteria

Women >40 years and ≤65 at screening visit [+11]

Current or previous hormone replacement therapy (HRT) [+20]

Status: Recruiting

Hypercalcemia After Paraffin Oil Injection

Today, there is an increased use of non-medical, invasive cosmetic treatments globally without sufficient awareness of possible health risks. A particular problem is young men injecting large amounts of paraffin oil into skeletal muscles especially on upper arms and chest to increase the visible size of the muscles. Several case reports have suggested that intramuscular injection of paraffin oil induces foreign body reaction and granuloma formation and subsequently hypercalcemia. Our hypothesis is that increased generation of activated vitamin D (1,25(OH)2D3) in the marcrophages may be responsible for the persistent hypercalcemia. Now trhe investigators want to include a large group of men who injected 100-10.000 ml paraffin oil to identify risk factors for developing hypercalcemia and try to understand the pathogenesis of the disease. Additionally, granuloma tissue from selected patients will be cultured ex vivo to investigate whether they produce 1,25(OH)2D3 or PTHrP and to test which drugs can most effectively be used to lower calcium levels in these men. Subsequently, we will try to stratify the men according to the severity of the changes in calcium homeostasis as we suggest that this stratification will be the basis for future intervention trials

Participants needed: 200
Trial details
Age: 18-80Biological sex: MaleType: ObservationalSponsor: Martin Blomberg JensenUpdated: Apr 6, 2025Locations: 1
Eligibility criteria

previous injection of paraffin oil into the body

inability to walk [+2]