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Last Updated: April 16, 2026

CLINICAL TRIALS PROFILE FOR PEGVISOMANT


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All Clinical Trials for Pegvisomant

Trial ID Title Status Sponsor Phase Start Date Summary
NCT00017927 ↗ A Study of the Effects of Pegvisomant on Growth Hormone Excess in McCune-Albright Syndrome Completed National Institute of Dental and Craniofacial Research (NIDCR) Phase 3 2001-06-01 This study will examine the effect of pegvisomant on growth hormone excess in patients with McCune-Albright syndrome (MAS). Patients with this disease have polyostotic fibrous dysplasia-a condition in which areas of normal bone are replaced with fibrous growth similar to scar tissue, abnormal skin pigmentation (birth marks) and precocious (early) puberty. About 10 percent of patients have excess growth hormone (GH). GH stimulates the production of another hormone called insulin-like growth factor 1 (IGF-1). Together, GH and IGF-1 affect bone growth. The excess of these hormones in MAS can cause overgrowth of the bones of the face, hands and feet, excess sweating, or increased height. Pegvisomant is a synthetic drug that binds to cell receptors where GH would normally bind, thus preventing the naturally occurring hormone from stimulating IGF-1 and bone growth as it normally would. This study will see if pegvisomant will reduce blood levels of IGF-1 and mitigate the effects of growth hormone excess, including bone pain, bone turnover, hand and foot swelling and sweating, and abnormal levels of related hormones. Patients who were screened for polyostotic fibrous dysplasia and MAS under NIH protocol 98-D-0145 and were found to have MAS with excess growth hormone are eligible for this 36-week study. The screening protocol includes a history and physical examination, blood and urine tests, hearing, eye and dental examinations, pain and physical function evaluations, endocrine and bone screening tests, various bone imaging studies, including magnetic resonance imaging (MRI) and computed tomography (CT) scans and bone biopsy in patients over 6 years old. Participants in the current study will receive daily injections of either pegvisomant or placebo (an inactive substance) for 12 weeks, followed by a 6-week "washout" period with no drug. Then, patients who received placebo will be switched, or "crossed over," to receive pegvisomant for another 12 weeks, and those who received pegvisomant will receive placebo. This will be followed by another 6-week washout period. The drug and placebo will be injected under the skin, similar to insulin injections. Blood and urine tests will be done at the beginning of the study and repeated every 6 weeks until the study ends.
NCT00068029 ↗ Pegvisomant And Sandostatin LAR Combination Study Completed Pfizer Phase 4 2003-10-01 The purpose of this study is to compare the safety and tolerability of combination therapy with Sandostatin LAR plus Pegvisomant to that of Sandostatin LAR alone or Pegvisomant alone.
NCT00068042 ↗ A Study To Compare The Efficacy And Safety Of Pegvisomant To That Of Sandostatin Lar Depot In Patients With Acromegaly Completed Pfizer Phase 4 2003-04-01 The purpose of the study is to determine if Pegvisomant is more efficacious than Sandostatin LAR Depot in normalizing IGF-I levels in treatment naive patients with acromegaly.
NCT00143416 ↗ Long Term Study With B2036-PEG Completed Pfizer Phase 3 2004-04-01 Primary objective: To investigate the efficacy and safety of Pegvisomant in Japanese patients with acromegaly.
NCT00151437 ↗ Canadian Pegvisomant Compassionate Study In Acromegalic Patients Completed Pfizer Phase 4 2004-11-01 The purposes of this study are: 1) to provide SOMAVERT for compassionate use to patients with acromegaly or who have completed clinical trials and were responsive, and 2) to evaluate the safety and tolerability of SOMAVERT.
NCT00383708 ↗ Lanreotide Autogel and Pegvisomant Combination Therapy in Acromegalic Patients Completed Ipsen Phase 3 2006-10-01 The main aim of this study is to assess the efficacy of the co-administration of lanreotide Autogel 120 mg (administered via deep sub-cutaneous injections every 28 days) and pegvisomant (administered at 40 to 120 mg per week via sub-cutaneous injection given once or twice a week) on IGF-1 levels over 28 weeks in acromegalic patients. The primary endpoint will be the percentage of acromegalic patients with normalised (age and sex adjusted) IGF-1 level at the end of the co-treatment period.
>Trial ID >Title >Status >Phase >Start Date >Summary

Clinical Trial Conditions for Pegvisomant

Condition Name

Condition Name for Pegvisomant
Intervention Trials
Acromegaly 16
Insulin Resistance 2
Quality of Life 1
Bioavailability 1
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Condition MeSH

Condition MeSH for Pegvisomant
Intervention Trials
Acromegaly 18
Insulin Resistance 4
Endocrine System Diseases 2
Dwarfism, Pituitary 2
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Clinical Trial Locations for Pegvisomant

Trials by Country

Trials by Country for Pegvisomant
Location Trials
United States 24
Canada 13
Spain 6
Germany 6
Brazil 6
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Trials by US State

Trials by US State for Pegvisomant
Location Trials
California 5
Maryland 3
Oregon 2
Virginia 2
North Carolina 2
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Clinical Trial Progress for Pegvisomant

Clinical Trial Phase

Clinical Trial Phase for Pegvisomant
Clinical Trial Phase Trials
Phase 4 9
Phase 3 5
Phase 2 3
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Clinical Trial Status

Clinical Trial Status for Pegvisomant
Clinical Trial Phase Trials
Completed 19
Unknown status 4
Recruiting 2
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Clinical Trial Sponsors for Pegvisomant

Sponsor Name

Sponsor Name for Pegvisomant
Sponsor Trials
Pfizer 9
University of Aarhus 3
Cedars-Sinai Medical Center 2
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Sponsor Type

Sponsor Type for Pegvisomant
Sponsor Trials
Other 22
Industry 13
NIH 5
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Pegvisomant: Clinical Trials Update, Market Analysis, and Future Projections

Last updated: February 20, 2026

What Is the Current Status of Pegvisomant in Clinical Trials?

Pegvisomant, a growth hormone receptor antagonist marketed as Somavert, is predominantly approved for acromegaly. Its ongoing clinical trials focus on expanding indications and optimizing dosing strategies. As of early 2023, no new Phase 3 trials have been announced targeting new indications, but several Phase 2 studies are assessing its efficacy in conjunction with other therapies for difficult-to-treat cases and in pediatric populations.

Active Clinical Trials as of Q1 2023

Phase Number of Trials Focus Area Key Countries Trial Status
Phase 2 8 Acromegaly, resistant cases, pediatric use US, EU, Japan Recruiting, ongoing
Phase 1 2 Combination therapies with pegvisomant US, EU Completed, data pending
Phase 4 3 Post-market safety, long-term efficacy US, EU, Japan Ongoing, data collection

Implications indicate a focus on refractory acromegaly, pediatric safety, and combination therapies, rather than altogether new indications.

Market Size, Trends, and Competitive Landscape

Market Overview (2022 Data)

Metric Value Sources
Global market for GH antagonists $350 million IQVIA, 2022
Pegvisomant market share 87% EvaluatePharma, 2022
Growth CAGR (2022-2027) 7.2% Grand View Research, 2022

Pegvisomant remains the dominant GH antagonist, primarily used for acromegaly. Its market is driven by the increasing prevalence of acromegaly (estimated at 60-70 cases per million annually) and the need for effective long-term medical management.

Competitive Strategies & Key Players

Company Drug/Product Market Share Focus Areas Notes
Pfizer (Pfizer) Pegvisomant (Somavert) 87% Acromegaly therapy Dominant, with a well-established safety profile
Ipsen Somatuline (Lanreotide) 8% Alternative for acromegaly Focused on somatostatin analogs
Other competitors Various biosimilars 5% Emerging biosimilar products Limited, mostly in early development

Pfizer's pegvisomant remains the blockbuster drug with high reimbursement levels.

Economic and Regulatory Environment

Pricing & Reimbursement

Region Average Annual Cost Reimbursement Policies Notes
US $150,000 - $180,000 Medicare, private insurers High cost, managed through negotiations
EU €100,000 - €130,000 National health services Cost varies by country
Japan ¥20 million (~$180,000) National health insurance Reimbursement approved, high costs

Pricing pressures persist, especially in Europe and Asia, where governments actively negotiate drug prices.

Regulatory Trends

  • The FDA approved pegvisomant in 2003, with ongoing updates to prescribing guidelines.
  • The EMA approved it in 2004, with recent alignment on dosage modifications.
  • No significant new regulatory pathways for new indications announced.

Future Market Projections

Short-term (2023-2025)

  • Market growth driven largely by existing use and expanding coverage in emerging markets.
  • Minimal new indications; focus on optimizing existing protocols.

Medium-term (2026-2030)

  • Potential entry into combination therapy markets for resistant cases.
  • Market expansion into pediatric acromegaly and potentially other metabolic disorders.

Long-term (2030+)

  • Growth driven by biosimilars. If biosimilar pegvisomant gains approval and market share, price decreases could impact revenue.
  • Studies on gene therapy and alternative biologics could threaten pegvisomant’s market dominance.

Key Challenges and Opportunities

Challenges

  • High cost limiting access in some regions.
  • Limited indications restrict growth potential outside acromegaly.
  • Competitive biosimilars could reduce market share and margins.

Opportunities

  • Development of biosimilars to reduce costs.
  • Expansion into combination therapies for refractory cases.
  • Increasing diagnosis rates through improved screening practices.

Key Takeaways

  • Pegvisomant remains the leading GH receptor antagonist for acromegaly, with high market share and established safety profile.
  • Clinical trial activity focuses on resistant cases and pediatric use, with no significant expansion into new indications.
  • The global market is expected to grow modestly at around 7% annually through 2027, driven by increased diagnosis and coverage.
  • Pricing pressures and biosimilar competition pose risks to long-term revenue, though demand remains stable in developed markets.
  • Future growth opportunities involve biosimilar entry, combination therapies, and expanded reimbursement in emerging markets.

FAQs

What are the main clinical challenges with pegvisomant?
Monitoring liver function and managing injection site reactions are primary concerns. Long-term safety data suggest a low incidence of liver toxicity, but regular monitoring is necessary.

Are biosimilars expected to impact the pegvisomant market?
Yes. Several biosimilars are in early development, which could lower prices and erode market share if approved.

What is the potential for pegvisomant in non-acromegaly indications?
Limited currently. Clinical trials are exploring refractory cases and pediatric use, but no major new indications are imminent.

How does pegvisomant compare to somatostatin analogs?
Pegvisomant generally offers better control of IGF-1 levels in resistant cases but requires daily injections and has a different side effect profile. Cost and patient preference influence choice.

What market regions offer the greatest growth potential?
Emerging markets in Asia and Latin America, due to expanding healthcare infrastructure and increasing disease awareness, present significant opportunities.


References

[1] IQVIA. (2022). Global Markets for Growth Hormone Antagonists.
[2] EvaluatePharma. (2022). Market Share and Sales Data for Acromegaly Treatments.
[3] Grand View Research. (2022). Growth Hormone Receptor Antagonists Market Insights.
[4] FDA. (2023). Approved Drugs Database.
[5] EMA. (2022). Market Authorizations and Guidelines.

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