A Phase 3 interventional study of Degarelix and Goserelin acetate in Prostate Cancer, sponsored by Ferring Pharmaceuticals. Terminated at 63 sites in 13 countries. Open to male participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2015-06-03.
Sponsored by Ferring Pharmaceuticals · Phase 3, Interventional, and Treatment
A phase III extension trial comparing the efficacy and safety of degarelix 3 month depot with the established therapy Zoladex 3 month implant in patients with prostate cancer.
CS35A was an open-label, multicentre, comparative non-inferiority extension trial to the Phase 3 CS35 trial (NCT00946920).
In the main CS35 trial, participants were randomised 2:1 to treatment with degarelix or goserelin, respectively. All participants who completed the main CS35 trial after initiation of the CS35A trial were eligible to enrol into this extension trial, provided that their treatment could continue uninterrupted. Patients entering the CS35A trial continued with the same 3-monthly treatment as they received in CS35 (i.e. degarelix 480 mg or goserelin 10.8 mg).
It was intended that patients enrolled in the CS35A trial would receive treatment with degarelix or goserelin at 3-month intervals for a period of 40 months (including 13 months' treatment in CS35). It was, however, decided to prematurely terminate the CS35A trial due to an insufficient number of patients being enrolled. Maximum exposure of treatment was 111 weeks (in both treatment arms).
The baseline characteristics are based on the CS35A Full Analysis Set (FAS)defined as all participants who received at least one dose of degarelix or goserelin acetate during CS35A and had at least one efficacy assessment after dosing. All efficacy analyses were performed for the CS35/CS35A FAS defined as all participants who received at least one dose of degarelix or goserelin acetate during CS35 and had at least one efficacy assessment after dosing. All safety analyses were performed for the CS35/CS35A Safety analysis set, which included all patients who received at least one dose of degarelix or goserelin acetate during CS35.
6,370 studies on the registry are indexed under Prostatic Neoplasms; 1,399 are open to participants now.
This study's enrollment of 288 is above the median of 58 across 4,822 interventional studies indexed under Prostatic Neoplasms.
Browse Prostatic Neoplasms studies →Ferring Pharmaceuticals is the lead sponsor of 244 studies on the registry; 4 are open to participants now.
Of its 14 completed or terminated interventional studies of FDA-regulated products, 13 (93%) have results posted.
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Exclusion Criteria:
Drug: Degarelix
Drug: Goserelin acetate
The degarelix doses were administered by subcutaneous (s.c.) injections into the abdominal wall. In the main CS35 trial, a starting dose of 240 mg degarelix was administered on Day 0. One month later a maintenance dose of 480 mg was administered. This was repeated after 4, 7, and 10 months (ie a total of 5 administrations in the main trial). In the CS35A extension trial, the participants received the same treatment as in the main trial ie the degarelix treated participants continued to receive degarelix 480 mg s.c. treatment every three months.
Also known as: Firmagon, FE200486
The goserelin doses were administered by subcutaneous (s.c.) implants into the abdominal wall. In the main CS35 trial, an initial dose of 3.6 mg goserelin was administered on Day 0. One month later a subsequent dose of 10.8 mg was administered and this was repeated after 4, 7, and 10 months (ie a total of 5 implants in the main trial). In the CS35A extension trial, the participants received the same treatment as in the main trial ie the goserelin treated participants continued to receive goserelin acetate 10.8 mg s.c. implants every three months.
Also known as: Zoladex
Hazard Ratio of Prostate-specific Antigen (PSA) Progression-free Survival (PFS) Failure Rates During 3 Years' Treatment Between Degarelix and Goserelin
PSA PFS failure is defined as either PSA failure (defined as increase in serum PSA of 50%, and at least 5 ng/mL, compared to nadir, measured on two consecutive occasions at least 2 weeks apart) or death, whichever is first. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no PSA-PFS.
Time frame: From baseline to 3 years
Hazard Ratio of PFS Failure Rates During 3 Years Treatment Between Degarelix and Goserelin
PFS failure is defined as either PSA failure, introduction of additional therapy related to prostate cancer (radiation, anti-androgens or second-line treatment), or death, whichever is first. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no PFS failure.
Time frame: From baseline to 3 years
Hazard Ratio of PSA Failure Rates During 3 Years Treatment Between Degarelix and Goserelin
PSA failure is defined as increase in serum PSA of 50%, and at least 5 ng/mL, compared to nadir, measured on two consecutive occasions at least 2 weeks apart. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no PSA failure.
Time frame: From baseline to 3 years
Hazard Ratio of Testosterone Escape Rates During 3 Years' Treatment Between Degarelix and Goserelin
Testosterone escape is defined as serum levels \>0.5 ng/mL. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no testosterone escape.
Time frame: From baseline to 3 years
Hazard Ratio of the Rates of Introduction of Additional Therapy Related to Prostate Cancer During 3 Years' Treatment Between Degarelix and Goserelin
Additional therapy related to prostate cancer included radiation, anti-androgens and second-line treatment. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no additional therapy related to prostate cancer.
Time frame: From baseline to 3 years
Hazard Ratio of Mortality Rates During 3 Years' Treatment Between Degarelix and Goserelin
The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of death.
Time frame: From baseline to 3 years
Serum Levels of Testosterone During 3 Years' Treatment With Degarelix or Goserelin
Median testosterone levels are presented as absolute values in nanograms per milliliter (ng/mL) at baseline and after 1, 6, 12, 19, and 22 months. One month equals 28 days. After 22 months, only a limited number of samples were analysed.
Time frame: Baseline and after 1, 6, 12, 19, and 22 months
Serum Levels of Prostate-specific Antigen (PSA) During 3 Years' Treatment With Degarelix or Goserelin
Median PSA levels are presented as absolute values in nanograms per milliliter (ng/mL) at baseline and after 1, 6, 12, 19, and 22 months. One month equals 28 days. After 22 months, only a limited number of samples were analysed.
Time frame: Baseline and after 1, 6, 12, 19, and 22 months
All participants who completed the main CS35 trial after initiation of the CS35A extension trial were eligible to enrol into CS35A.
| Milestone | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Started | 194 | 94 |
| Cs35/cs35a safety analysis set | 565 | 283 |
| Cs35/cs35a full analysis set (fas) | 565 | 282 |
| Completed | 156 | 80 |
| Not completed | 38 | 14 |
| Withdrew: Adverse event | 10 | 5 |
| Withdrew: Lost to follow-up | 6 | 2 |
| Withdrew: Physician decision | 3 | 2 |
| Withdrew: Protocol violation | 1 | 0 |
| Withdrew: Withdrawal by subject | 10 | 2 |
| Withdrew: Miscellaneous reasons | 8 | 3 |
PSA PFS failure is defined as either PSA failure (defined as increase in serum PSA of 50%, and at least 5 ng/mL, compared to nadir, measured on two consecutive occasions at least 2 weeks apart) or death, whichever is first. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no PSA-PFS.
| percentage of no PSA-PFS | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Hazard Ratio of Prostate-specific Antigen (PSA) Progression-free Survival (PFS) Failure Rates During 3 Years' Treatment Between Degarelix and Goserelin | 75.5 (69.1 to 80.7) | 75.4 (64.5 to 83.4) |
PFS failure is defined as either PSA failure, introduction of additional therapy related to prostate cancer (radiation, anti-androgens or second-line treatment), or death, whichever is first. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no PFS failure.
| percentage of no PFS failure | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Hazard Ratio of PFS Failure Rates During 3 Years Treatment Between Degarelix and Goserelin | 71.5 (66.0 to 76.2) | 69.0 (58.0 to 77.7) |
PSA failure is defined as increase in serum PSA of 50%, and at least 5 ng/mL, compared to nadir, measured on two consecutive occasions at least 2 weeks apart. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no PSA failure.
| percentage of no PSA failure | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Hazard Ratio of PSA Failure Rates During 3 Years Treatment Between Degarelix and Goserelin | 77.5 (71.0 to 82.7) | 79.6 (68.9 to 86.9) |
Testosterone escape is defined as serum levels \>0.5 ng/mL. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no testosterone escape.
| percentage of no testosterone escape | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Hazard Ratio of Testosterone Escape Rates During 3 Years' Treatment Between Degarelix and Goserelin | 83.7 (77.4 to 88.4) | 96.7 (93.7 to 98.2) |
Additional therapy related to prostate cancer included radiation, anti-androgens and second-line treatment. The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of no additional therapy related to prostate cancer.
| percentage of no additional therapy | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Hazard Ratio of the Rates of Introduction of Additional Therapy Related to Prostate Cancer During 3 Years' Treatment Between Degarelix and Goserelin | 84.5 (80.0 to 88.1) | 83.4 (77.3 to 88.0) |
The number below present the unadjusted rates (estimated using the Kaplan-Meier method) of death.
| percentage of deaths | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Hazard Ratio of Mortality Rates During 3 Years' Treatment Between Degarelix and Goserelin | 4.6 (2.4 to 8.5) | 5.3 (2.6 to 10.5) |
Median testosterone levels are presented as absolute values in nanograms per milliliter (ng/mL) at baseline and after 1, 6, 12, 19, and 22 months. One month equals 28 days. After 22 months, only a limited number of samples were analysed.
| ng/mL | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Baseline | 4.52 (0.56 to 14.5) | 4.62 (0.07 to 13.2) |
| Month 1 | 0.10 (0.015 to 3.85) | 0.16 (0.04 to 1.77) |
| Month 6 | 0.09 (0.015 to 1.57) | 0.09 (0.015 to 0.32) |
| Month 12 | 0.10 (0.015 to 1.1) | 0.09 (0.015 to 0.44) |
| Month 19 | 0.11 (0.05 to 2.22) | 0.05 (0.05 to 0.43) |
| Month 22 | 0.11 (0.05 to 3.4) | 0.05 (0.05 to 0.23) |
Median PSA levels are presented as absolute values in nanograms per milliliter (ng/mL) at baseline and after 1, 6, 12, 19, and 22 months. One month equals 28 days. After 22 months, only a limited number of samples were analysed.
| ng/mL | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Baseline | 19 (0.26 to 8762) | 19.1 (0.005 to 12961) |
| Month 1 | 3.79 (0.03 to 1540) | 6.5 (0.005 to 645) |
| Month 6 | 0.82 (0.005 to 2648) | 0.73 (0.005 to 607) |
| Month 12 | 0.6 (0.005 to 6889) | 0.43 (0.005 to 1802) |
| Month 19 | 0.54 (0.005 to 712) | 0.28 (0.005 to 1150) |
| Month 22 | 0.535 (0.005 to 252) | 0.26 (0.005 to 646) |
Collected over Adverse events were recorded from signed informed consent until the last visit (maximum 111 weeks of treatment).. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| Degarelix 240 mg/480 mg | — | 58/565 (10.3%) | 430/565 (76.1%) |
| Goserelin Acetate | — | 33/283 (11.7%) | 197/283 (69.6%) |
| Event | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Pulmonary embolismRespiratory, thoracic and mediastinal disorders | 4/565 | 3/283 |
| AnaemiaBlood and lymphatic system disorders | 2/565 | 2/283 |
| Acute myocardial infarctionCardiac disorders | 2/565 | 2/283 |
| Supraventricular tachycardiaCardiac disorders | 0/565 | 2/283 |
| Lobar pneumoniaInfections and infestations | 1/565 | 2/283 |
| PneumoniaInfections and infestations | 1/565 | 2/283 |
| Colon cancerNeoplasms benign, malignant and unspecified (incl cysts and polyps) | 1/565 | 2/283 |
| Chronic obstructive pulmonary diseaseRespiratory, thoracic and mediastinal disorders | 2/565 | 2/283 |
| Gastrointestinal haemorrhageGastrointestinal disorders | 3/565 | 0/283 |
| Sudden deathGeneral disorders | 3/565 | 0/283 |
| Event | Degarelix 240 mg/480 mg | Goserelin Acetate |
|---|---|---|
| Injection site painGeneral disorders | 174/565 | 4/283 |
| Hot flushVascular disorders | 161/565 | 76/283 |
| Injection site erythemaGeneral disorders | 123/565 | 0/283 |
| Injection site noduleGeneral disorders | 52/565 | 0/283 |
| Weight increasedInvestigations | 27/565 | 24/283 |
| Back painMusculoskeletal and connective tissue disorders | 23/565 | 23/283 |
| HypertensionVascular disorders | 23/565 | 20/283 |
| Injection site swellingGeneral disorders | 36/565 | 0/283 |
| Urinary tract infectionInfections and infestations | 26/565 | 18/283 |
| Oedema peripheralGeneral disorders | 13/565 | 16/283 |
CS35A Full Analysis Set
| Age, Continuous(years) | Degarelix 240 mg/480 mg | Goserelin Acetate | Total |
|---|---|---|---|
| Mean | 73.1 ± 8.4 | 71.3 ± 7.0 | 72.5 ± 8.0 |
| Sex: Female, Male(Participants) | Degarelix 240 mg/480 mg | Goserelin Acetate | Total |
|---|---|---|---|
| Female | 0 | 0 | 0 |
| Male | 194 | 94 | 288 |
| Race (NIH/OMB)(Participants) | Degarelix 240 mg/480 mg | Goserelin Acetate | Total |
|---|---|---|---|
| American Indian or Alaska Native | 34 | 21 | 55 |
| Asian | 1 | 0 | 1 |
| Native Hawaiian or Other Pacific Islander | 0 | 0 | 0 |
| Black or African American | 5 | 5 | 10 |
| White | 154 | 68 | 222 |
| More than one race | 0 | 0 | 0 |
| Unknown or Not Reported | 0 | 0 | 0 |
| Median Baseline Serum Testosterone Levels(nanogram per milliliter (ng/mL)) | Degarelix 240 mg/480 mg | Goserelin Acetate | Total |
|---|---|---|---|
| Median | 4.41 (0.68 to 13.3) | 4.65 (1.55 to 13.2) | 4.52 (0.68 to 13.3) |
| Median Baseline Serum Prostate-specific Antigen Levels(ng/mL) | Degarelix 240 mg/480 mg | Goserelin Acetate | Total |
|---|---|---|---|
| Median | 20.6 (0.4 to 8762) | 16.6 (1.49 to 12961) | 18.7 (0.4 to 12961) |
This study is terminated, as verified in May 2015. You cannot join it, but the record below documents what was studied.
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Ferring Pharmaceuticals