A Phase 3 interventional study of CT-P6 and Herceptin in Metastatic Breast Cancer, sponsored by Celltrion. Completed at 1 site in Korea, Republic of. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2025-02-11.
Sponsored by Celltrion · Phase 3, Interventional, and Treatment
The purpose of the study is to demonstrate equivalence
Patients will receive CT-P6 or Herceptin every 3 weeks.
12,544 studies on the registry are indexed under Breast Neoplasms; 2,892 are open to participants now.
This study's enrollment of 475 is above the median of 72 across 9,303 interventional studies indexed under Breast Neoplasms.
Browse Breast Neoplasms studies →Celltrion is the lead sponsor of 76 studies on the registry; 3 are open to participants now.
Of its 18 completed or terminated interventional studies of FDA-regulated products, 13 (72%) have results posted.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
CT-P6 was administered at a loading dose of 8 mg/kg body weight by intravenous (IV) infusion over 90 minutes on Day 1, Cycle 1, then at 6 mg/kg repeated at 3-weekly intervals until disease progression, death or discontinuation. Paclitaxel was administered at a dose of 175 mg/m2 body surface area (BSA) as a continuous 3-hour IV infusion on the day following the first dose of study drug (CT-P6). If the first dose of study drug was well tolerated, subsequent doses of paclitaxel were given immediately after the next dose of study drug. Paclitaxel cycles were repeated every 3 weeks until disease progression, death or discontinuation.
Drug: CT-P6 · Drug: Paclitaxel
Herceptin was administered at a loading dose of 8 mg/kg body weight by IV infusion over 90 minutes on Day 1, Cycle 1, then at 6 mg/kg repeated at 3-weekly intervals until disease progression, death or discontinuation. Paclitaxel was administered at a dose of 175 mg/m2 BSA as a continuous 3-hour IV infusion on the day following the first dose of study drug (Herceptin). If the first dose of study drug was well tolerated, subsequent doses of paclitaxel were given immediately after the next dose of study drug. Paclitaxel cycles were repeated every 3 weeks until disease progression, death or discontinuation.
Drug: Herceptin · Drug: Paclitaxel
Administered every 3 weeks
Administered every 3 weeks
Also known as: Trastuzumab
Administered every 3 weeks
Objective Response Rate
Best Overall Response (BOR) was derived from the overall response across all time points until after Cycle 8 using Independent Tumor Review Committee (ITRC) data in the FAS. Objective Response Rate (ORR) was defined as the number of patients with a BOR of complete response (CR) or partial response (PR) divided by the number of patients in the corresponding population, as assessed by Response Evaluation Criteria In Solid Tumours (RECIST) version 1.1.
Time frame: 6 months (up to 24 weeks)
Time to Progression
Time from randomization to determined progressive disease, as assessed by RECIST version 1.1.
Time frame: Through study completion, approximately 40 months
Time to Response
Time from randomization to observed tumor response (Complete Response or Partial Response), as assessed by RECIST 1.1
Time frame: Through study completion, approximately 40 months
Progression Free Survival
Time from randomization to radiological progression or death from any cause, as assessed by RECIST 1.1
Time frame: Through study completion, approximately 40 months
Overall Survival
The number of days between the date of randomization and the date of death from any cause.
Time frame: Through study completion, approximately 40 months
Safety Endpoints; Cardiotoxicity
Mean change from baseline to endpoint assessment in left ventricular ejection fraction (LVEF) (%)
Time frame: Through study completion, approximately 40 months
Safety Endpoints; Immunogenicity
Assessed by the proportion of patients with development of antibodies to study drug (positive anti-drug antibody \[ADA\] results after the first study drug infusion)
Time frame: During treatment, median of 13 cycles (every cycle is 3 weeks)
Pharmacokinetic Endpoints; Ctroughss
Trough concentration at steady state
Time frame: predose and at 1.5 hours (end of infusion) of each cycle
| Milestone | CT-P6 | Herceptin |
|---|---|---|
| Started | 244 | 231 |
| Completed | 185 | 192 |
| Not completed | 59 | 39 |
| Withdrew: Adverse event | 12 | 7 |
| Withdrew: Disease progression | 41 | 24 |
| Withdrew: Physician decision | 2 | 0 |
| Withdrew: Withdrawal by subject | 4 | 6 |
| Withdrew: Other reason | 0 | 1 |
| Withdrew: Other | 0 | 1 |
| Milestone | CT-P6 | Herceptin |
|---|---|---|
| Started | 168 | 168 |
| Completed | 0 | 0 |
| Not completed | 168 | 168 |
| Withdrew: Adverse event | 8 | 2 |
| Withdrew: Disease progression | 129 | 119 |
| Withdrew: Physician decision | 6 | 5 |
| Withdrew: Withdrawal by subject | 12 | 20 |
| Withdrew: Other reason | 7 | 13 |
| Withdrew: Other | 6 | 9 |
Best Overall Response (BOR) was derived from the overall response across all time points until after Cycle 8 using Independent Tumor Review Committee (ITRC) data in the FAS. Objective Response Rate (ORR) was defined as the number of patients with a BOR of complete response (CR) or partial response (PR) divided by the number of patients in the corresponding population, as assessed by Response Evaluation Criteria In Solid Tumours (RECIST) version 1.1.
| Participants | CT-P6 | Herceptin |
|---|---|---|
| Objective Response Rate | 138 | 143 |
Time from randomization to determined progressive disease, as assessed by RECIST version 1.1.
| months | CT-P6 | Herceptin |
|---|---|---|
| ITRC | 11.07 (9.69 to 12.42) | 12.52 (11.10 to NA) |
| Investigator | 10.99 (9.70 to 11.71) | 11.25 (9.74 to 12.47) |
Time from randomization to observed tumor response (Complete Response or Partial Response), as assessed by RECIST 1.1
| months | CT-P6 | Herceptin |
|---|---|---|
| ITRC | 1.38 (1.38 to 1.41) | 1.38 (1.38 to 1.41) |
| Investigator | 1.41 (1.41 to 1.45) | 1.41 (1.38 to 1.45) |
Time from randomization to radiological progression or death from any cause, as assessed by RECIST 1.1
| months | CT-P6 | Herceptin |
|---|---|---|
| Progression Free Survival | 10.99 (9.67 to 11.58) | 11.15 (9.74 to 12.43) |
The number of days between the date of randomization and the date of death from any cause.
| months | CT-P6 | Herceptin |
|---|---|---|
| Overall Survival | 28.82 (25.10 to 32.96) | 26.84 (22.43 to 32.50) |
Mean change from baseline to endpoint assessment in left ventricular ejection fraction (LVEF) (%)
| %; percent change in LVEF | CT-P6 | Herceptin |
|---|---|---|
| Safety Endpoints; Cardiotoxicity | -4.56 ± 6.56 | -4.98 ± 6.54 |
Assessed by the proportion of patients with development of antibodies to study drug (positive anti-drug antibody \[ADA\] results after the first study drug infusion)
| Participants | CT-P6 | Herceptin |
|---|---|---|
| ADA positive patients with at least 1 result at any time during the study | 4 | 2 |
| ADA positive patients with a result at baseline visit | 1 | 2 |
| ADA positive patients with at least 1 result after the first infusion | 3 | 0 |
Trough concentration at steady state
| ug/mL | CT-P6 | Herceptin |
|---|---|---|
| Pharmacokinetic Endpoints; Ctroughss | 23.6 ± 24.5 | 24.2 ± 27.8 |
Collected over Adverse event (AE) reporting was extended from date of informed consent until completion of the final visit (up to approximately 57 months).. Non-serious events are listed at a 5% frequency threshold.
| Group | Deaths | Serious | Other |
|---|---|---|---|
| CT-P6 | 8/244 (3.3%) | 34/244 (13.9%) | 227/244 (93%) |
| Herceptin | 8/231 (3.5%) | 39/231 (16.9%) | 214/231 (92.6%) |
| Event | CT-P6 | Herceptin |
|---|---|---|
| NeutropeniaBlood and lymphatic system disorders | 2/244 | 6/231 |
| Disease progressionGeneral disorders | 4/244 | 6/231 |
| Febrile neutropeniaBlood and lymphatic system disorders | 5/244 | 4/231 |
| PneumoniaInfections and infestations | 2/244 | 3/231 |
| Metastases to central nervous systemNeoplasms benign, malignant and unspecified (incl cysts and polyps) | 0/244 | 3/231 |
| AnaemiaBlood and lymphatic system disorders | 1/244 | 2/231 |
| DeathGeneral disorders | 0/244 | 2/231 |
| Urinary tract infectionInfections and infestations | 1/244 | 2/231 |
| Left ventricular dysfunctionCardiac disorders | 2/244 | 0/231 |
| Infusion related reactionGeneral disorders | 2/244 | 1/231 |
| Event | CT-P6 | Herceptin |
|---|---|---|
| AlopeciaSkin and subcutaneous tissue disorders | 122/244 | 127/231 |
| NeutropeniaBlood and lymphatic system disorders | 68/244 | 76/231 |
| Neuropathy peripheralNervous system disorders | 65/244 | 58/231 |
| Peripheral sensory neuropathyNervous system disorders | 50/244 | 54/231 |
| MyalgiaMusculoskeletal and connective tissue disorders | 47/244 | 53/231 |
| LeukopeniaBlood and lymphatic system disorders | 28/244 | 50/231 |
| AstheniaGeneral disorders | 50/244 | 34/231 |
| DiarrhoeaGastrointestinal disorders | 34/244 | 44/231 |
| NauseaGastrointestinal disorders | 41/244 | 40/231 |
| AnaemiaBlood and lymphatic system disorders | 31/244 | 38/231 |
All baseline characteristics of the Phase 3 study (CT-P6 3.1) listed below were analyzed in conjunction with those of the Phase 1/2b study (CT-P6 1.1).
| Age, Continuous(years) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| Mean | 53.8 ± 9.70 | 51.9 ± 10.75 | 52.9 ± 10.26 |
| Age, Customized(Participants) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| >=65 years | 34 | 22 | 56 |
| <65 years | 210 | 209 | 419 |
| Sex: Female, Male(Participants) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| Female | 244 | 231 | 475 |
| Male | 0 | 0 | 0 |
| Race/Ethnicity, Customized(Participants) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| White | 158 | 141 | 299 |
| Asian | 86 | 90 | 176 |
| Region of Enrollment(Participants) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| Belarus | 8 | 8 | 16 |
| Bulgaria | 13 | 7 | 20 |
| Georgia | 10 | 11 | 21 |
| Hong Kong | 0 | 2 | 2 |
| India | 31 | 35 | 66 |
| South Korea | 31 | 32 | 63 |
| Latvia | 7 | 6 | 13 |
| Malaysia | 2 | 3 | 5 |
| Philippines | 17 | 15 | 32 |
| Poland | 4 | 4 | 8 |
| Romania | 6 | 7 | 13 |
| Russia | 47 | 39 | 86 |
| Serbia | 4 | 5 | 9 |
| Singapore | 1 | 0 | 1 |
| Thailand | 4 | 3 | 7 |
| Turkey | 4 | 2 | 6 |
| Ukraine | 55 | 52 | 107 |
| Childbearing Potential(Participants) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| Yes | 53 | 74 | 127 |
| No | 191 | 157 | 348 |
| Height at Screening(cm) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| Mean | 159.5 ± 6.98 | 158.9 ± 7.21 | 159.2 ± 7.09 |
| Weight at Screening(kg) | CT-P6 | Herceptin | Total |
|---|---|---|---|
| Mean | 67.5 ± 14.85 | 69.3 ± 16.06 | 68.4 ± 15.46 |
4 further baseline measures are reported on the registry.
This study is completed, as verified in Jan 2025. You cannot join it, but the record below documents what was studied.
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