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CompletedNCT01964170Updated Oct 31, 2024

A Study to Compare the Effect of ASP3550 With Goserelin in Patients With Prostate Cancer

A Phase 3 interventional study of degarelix and Goserelin in Prostate Cancer, sponsored by Astellas Pharma Inc. Completed at 8 sites in Japan. Open to male participants aged 20 Years and older. Per ClinicalTrials.gov, last updated 2024-10-31.

Sponsored by Astellas Pharma Inc · Phase 3, Interventional, and Treatment

Phase
Phase 3
Study type
Interventional
Enrollment
234
Allocation
Randomized
Ages
20 Years and older
Sex
Male
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Study summary

To compare the efficacy and safety of ASP3550 to goserelin acetate in patients with prostate cancer.

Read the detailed description

This study consists of two parts. The purpose of PART 1 is to test non-inferiority of ASP3550 to goserelin acetate with respect to the cumulative castration rate in terms of serum testosterone when ASP3550 or goserelin acetate is administered for one-year in patients with prostate cancer.

The patients assigned to receive ASP3550 and completed the treatment in PART 1 are eligible for the treatment in PART 2, and will receive ASP3550 maintenance dose subcutaneously for additional term. The long-term safety, efficacy and PK of the continued ASP3550 treatment will be assessed in PART 2.

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Conditions studied

  • Prostate Cancer

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Keywords

  • ASP3550
  • Prostate cancer
03

In context

Prostatic Neoplasms

6,367 studies on the registry are indexed under Prostatic Neoplasms; 1,397 are open to participants now.

This study's enrollment of 234 is above the median of 58 across 4,821 interventional studies indexed under Prostatic Neoplasms.

Browse Prostatic Neoplasms studies →

Lead sponsor

Astellas Pharma Inc is the lead sponsor of 512 studies on the registry; 4 are open to participants now.

Of its 27 completed or terminated interventional studies of FDA-regulated products, 19 (70%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
20 Years and older
Sexes eligible
Male
Accepts healthy volunteers
No

Inclusion criteria

  • Male patient with histologically confirmed prostate cancer (adenocarcinoma).
  • Patient in whom endocrine treatment is indicated. Patient having undergoing prostatectomy or radiotherapy with curative intention and has a rising serum PSA (PSA ≥ 2 ng/mL at screening) may be included.
  • Has a serum testosterone level above 2.2 ng/mL at screening.
  • Has an Eastern Cooperative Oncology Group (ECOG) Performance Status (PS) score of 0 to 2 at screening.
  • Has a serum PSA ≥ 2 ng/mL at screening.
  • Has a life expectancy of at least 12 months.

Exclusion criteria

Exclusion Criteria:

  • Previous or present endocrine treatment for prostate cancer. Example: surgical castration, GnRH agonists, GnRH antagonists, antiandrogens or oestrogens, and 5α-reductase inhibitors.
  • Received a 5α-reductase inhibitor within 25 weeks preceding screening.
  • Is a candidate for curative therapy, i.e., radical prostatectomy or radiotherapy within 12 months.
  • Has concurrent or a history of poorly controlled severe asthma, anaphylactic reactions, severe urticaria or angioedema.
  • Has hypersensitivity towards mannitol.
  • Has a marked prolongation of QT/QTc interval (two consecutive increases to >450 ms in QTc interval at retest) at screening.
  • Has concurrent or a history of a disease (heart failure, hypokalemia, a family history of QT prolongation syndrome, etc.) that may induce Torsade de Pointes.
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Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
234 participants (actual)

Study arms

  • Experimental
    ASP3550 PART 1 and PART 2

    Part 1 for 1 year treatment and Part 2 for an extended period of treatment

    Drug: degarelix

  • Active comparator
    Goserelin

    part 1 for 1 year treatment

    Drug: Goserelin

Interventions

  • Drugdegarelix

    subcutaneous

    Also known as: ASP3550

  • DrugGoserelin

    subcutaneous

06

What researchers measure

Primary outcomes

  1. Cumulative castration rate of treatment in terms of serum testosterone level

    Time frame: Up to one year of the treatment

Secondary outcomes

  1. Proportion of castrated subjects in terms of serum testosterone level

    Time frame: Up to one year of the treatment

  2. Proportion of castrated subjects in terms of serum testosterone level

    Time frame: Baseline and Days 3, 7, and 28

  3. Changes in serum levels of prostate-specific antigen (PSA) over time

    Time frame: Up to one year of the treatment

  4. Safety assessed by the incidence of adverse events

    Time frame: up to the end of treatment. approximately for 2 years

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Study locations

8 sites
  • Chubu, Japan
  • Chugoku, Japan
  • Hokkaido, Japan
  • Kansai, Japan
  • Kantou, Japan
  • Kyushu, Japan
  • Shikoku, Japan
  • Touhoku, Japan
08

References and documents

Publications

  • Zengerling F, Jakob JJ, Schmidt S, Meerpohl JJ, Blumle A, Schmucker C, Mayer B, Kunath F. Degarelix for treating advanced hormone-sensitive prostate cancer. Cochrane Database Syst Rev. 2021 Aug 5;8(8):CD012548. doi: 10.1002/14651858.CD012548.pub2. PubMed 34350976 ↗
  • Ozono S, Tsukamoto T, Naito S, Horie S, Ohashi Y, Uemura H, Yokomizo Y, Fukasawa S, Kusuoka H, Akazawa R, Saito M, Akaza H. Efficacy and safety of 3-month dosing regimen of degarelix in Japanese subjects with prostate cancer: A phase III study. Cancer Sci. 2018 Jun;109(6):1920-1929. doi: 10.1111/cas.13600. Epub 2018 May 23. PubMed 29624800 ↗

Individual participant data

Plan to share: Yes — Access to anonymized individual participant level data collected during the study, in addition to study-related supporting documentation, is planned for studies conducted with approved product indications and formulations, as well as products terminated during development. Studies conducted with product indications or formulations that remain active in development are assessed after study completion to determine if Individual Participant Data can be shared. Further details on Astellas' data sharing policy can be found at https://www.clinicaltrials.astellas.com/transparency/.

Supporting information: Study protocol, Sap, Csr

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Oct 31, 2024, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT01964170
Lead sponsor
Astellas Pharma Inc
Responsible party
Sponsor
First posted
Oct 17, 2013
Start date
Aug 13, 2013
Primary completion
Jun 5, 2015
Completion
Aug 8, 2016
Last update
Oct 31, 2024

Study contacts

Medical Director
principal investigator · Astellas Pharma Inc

Oversight

Data monitoring committee
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2024. You cannot join it, but the record below documents what was studied.

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