CClinicalTrials.gg
CompletedNCT01084876CompareUpdated Feb 11, 2025Results posted

Demonstrate Efficacy and Safety of Metastatic Breast Cancer

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

Phase
Phase 3
Study type
Interventional
Enrollment
475
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

The purpose of the study is to demonstrate equivalence

Read the detailed description

Patients will receive CT-P6 or Herceptin every 3 weeks.

02

Conditions studied

  • Metastatic Breast Cancer

Browse trials for

Keywords

  • Herceptin
  • metastatic breast cancer
  • CT-P6
  • Her 2-positive
03

In context

Breast Neoplasms

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 →

Lead sponsor

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.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  • Are females
  • Have Her 2 over-expression
  • Have Eastern Cooperative Oncology Group (ECOG) Performance Status of 0 or 1

Exclusion criteria

Exclusion Criteria:

  • Current clinical or radiographic evidence central nervous system (CNS) metastases
  • Current Known infection
  • Pregnant or nursing mother
05

Study design

Phase
Phase 3
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Triple (Participant, Care provider, Investigator)
Enrollment
475 participants (actual)

Study arms

  • Experimental
    CT-P6 & Paclitaxel

    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

  • Active comparator
    Herceptin & 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

Interventions

  • DrugCT-P6

    Administered every 3 weeks

  • DrugHerceptin

    Administered every 3 weeks

    Also known as: Trastuzumab

  • DrugPaclitaxel

    Administered every 3 weeks

06

What researchers measure

Primary outcomes

  1. 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)

Secondary outcomes

  1. 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

  2. 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

  3. 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

  4. 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

  5. Safety Endpoints; Cardiotoxicity

    Mean change from baseline to endpoint assessment in left ventricular ejection fraction (LVEF) (%)

    Time frame: Through study completion, approximately 40 months

  6. 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)

  7. Pharmacokinetic Endpoints; Ctroughss

    Trough concentration at steady state

    Time frame: predose and at 1.5 hours (end of infusion) of each cycle

07

Results

Posted Feb 11, 2025

Participant flow

Main Study Treatment Period
Participant flow — Main Study Treatment Period
MilestoneCT-P6Herceptin
Started244231
Completed185192
Not completed5939
Withdrew: Adverse event127
Withdrew: Disease progression4124
Withdrew: Physician decision20
Withdrew: Withdrawal by subject46
Withdrew: Other reason01
Withdrew: Other01
Treatment Period Beyond Cycle 8
Participant flow — Treatment Period Beyond Cycle 8
MilestoneCT-P6Herceptin
Started168168
Completed00
Not completed168168
Withdrew: Adverse event82
Withdrew: Disease progression129119
Withdrew: Physician decision65
Withdrew: Withdrawal by subject1220
Withdrew: Other reason713
Withdrew: Other69

Outcome measures

PrimaryObjective 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)
Reported as:
Count of participants · Participants
Objective Response Rate
ParticipantsCT-P6Herceptin
Objective Response Rate138143
Statistical analysis
  • CT-P6 vs Herceptin · Risk difference (rd): -0.0535 · 95% CI -0.143 to 0.036
SecondaryTime to Progression

Time from randomization to determined progressive disease, as assessed by RECIST version 1.1.

Time frame:
Through study completion, approximately 40 months
Reported as:
Median · months
Time to Progression
monthsCT-P6Herceptin
ITRC11.07 (9.69 to 12.42)12.52 (11.10 to NA)
Investigator10.99 (9.70 to 11.71)11.25 (9.74 to 12.47)
SecondaryTime 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
Reported as:
Median · months
Time to Response
monthsCT-P6Herceptin
ITRC1.38 (1.38 to 1.41)1.38 (1.38 to 1.41)
Investigator1.41 (1.41 to 1.45)1.41 (1.38 to 1.45)
SecondaryProgression 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
Reported as:
Median · months
Progression Free Survival
monthsCT-P6Herceptin
Progression Free Survival10.99 (9.67 to 11.58)11.15 (9.74 to 12.43)
SecondaryOverall 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
Reported as:
Median · months
Overall Survival
monthsCT-P6Herceptin
Overall Survival28.82 (25.10 to 32.96)26.84 (22.43 to 32.50)
SecondarySafety Endpoints; Cardiotoxicity

Mean change from baseline to endpoint assessment in left ventricular ejection fraction (LVEF) (%)

Time frame:
Through study completion, approximately 40 months
Reported as:
Mean · %; percent change in LVEF
Safety Endpoints; Cardiotoxicity
%; percent change in LVEFCT-P6Herceptin
Safety Endpoints; Cardiotoxicity-4.56 ± 6.56-4.98 ± 6.54
SecondarySafety 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)
Reported as:
Count of participants · Participants
Safety Endpoints; Immunogenicity
ParticipantsCT-P6Herceptin
ADA positive patients with at least 1 result at any time during the study42
ADA positive patients with a result at baseline visit12
ADA positive patients with at least 1 result after the first infusion30
SecondaryPharmacokinetic Endpoints; Ctroughss

Trough concentration at steady state

Time frame:
predose and at 1.5 hours (end of infusion) of each cycle
Reported as:
Mean · ug/mL
Pharmacokinetic Endpoints; Ctroughss
ug/mLCT-P6Herceptin
Pharmacokinetic Endpoints; Ctroughss23.6 ± 24.524.2 ± 27.8

Adverse events

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.

Adverse event summary by group
GroupDeathsSeriousOther
CT-P68/244 (3.3%)34/244 (13.9%)227/244 (93%)
Herceptin8/231 (3.5%)39/231 (16.9%)214/231 (92.6%)
Most frequent serious events
Showing 10 of 59
Most frequent serious events
EventCT-P6Herceptin
NeutropeniaBlood and lymphatic system disorders2/2446/231
Disease progressionGeneral disorders4/2446/231
Febrile neutropeniaBlood and lymphatic system disorders5/2444/231
PneumoniaInfections and infestations2/2443/231
Metastases to central nervous systemNeoplasms benign, malignant and unspecified (incl cysts and polyps)0/2443/231
AnaemiaBlood and lymphatic system disorders1/2442/231
DeathGeneral disorders0/2442/231
Urinary tract infectionInfections and infestations1/2442/231
Left ventricular dysfunctionCardiac disorders2/2440/231
Infusion related reactionGeneral disorders2/2441/231
Most frequent other events
Showing 10 of 41
Most frequent other events
EventCT-P6Herceptin
AlopeciaSkin and subcutaneous tissue disorders122/244127/231
NeutropeniaBlood and lymphatic system disorders68/24476/231
Neuropathy peripheralNervous system disorders65/24458/231
Peripheral sensory neuropathyNervous system disorders50/24454/231
MyalgiaMusculoskeletal and connective tissue disorders47/24453/231
LeukopeniaBlood and lymphatic system disorders28/24450/231
AstheniaGeneral disorders50/24434/231
DiarrhoeaGastrointestinal disorders34/24444/231
NauseaGastrointestinal disorders41/24440/231
AnaemiaBlood and lymphatic system disorders31/24438/231

Baseline characteristics

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
Age, Continuous(years)CT-P6HerceptinTotal
Mean53.8 ± 9.7051.9 ± 10.7552.9 ± 10.26
Age, Customized
Age, Customized(Participants)CT-P6HerceptinTotal
>=65 years342256
<65 years210209419
Sex: Female, Male
Sex: Female, Male(Participants)CT-P6HerceptinTotal
Female244231475
Male000
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)CT-P6HerceptinTotal
White158141299
Asian8690176
Region of Enrollment
Region of Enrollment(Participants)CT-P6HerceptinTotal
Belarus8816
Bulgaria13720
Georgia101121
Hong Kong022
India313566
South Korea313263
Latvia7613
Malaysia235
Philippines171532
Poland448
Romania6713
Russia473986
Serbia459
Singapore101
Thailand437
Turkey426
Ukraine5552107
Childbearing Potential
Childbearing Potential(Participants)CT-P6HerceptinTotal
Yes5374127
No191157348
Height at Screening
Height at Screening(cm)CT-P6HerceptinTotal
Mean159.5 ± 6.98158.9 ± 7.21159.2 ± 7.09
Weight at Screening
Weight at Screening(kg)CT-P6HerceptinTotal
Mean67.5 ± 14.8569.3 ± 16.0668.4 ± 15.46

4 further baseline measures are reported on the registry.

08

Study locations

1 site
  • Samsung Medical Center
    Seoul, Korea, Republic of
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 11, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT01084876
Lead sponsor
Celltrion
Responsible party
Sponsor
First posted
Mar 11, 2010
Start date
Jun 2010
Primary completion
Jul 2012
Completion
Mar 2015
Results posted
Feb 11, 2025
Last update
Feb 11, 2025

Study contacts

Investigational Site
principal investigator · Samsung Medical Center

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jan 2025. You cannot join it, but the record below documents what was studied.

Follow this study

Get an email when the registry record changes — status, dates, results — or when someone posts here.

Sign in to follow

Discussion

Questions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.

Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.

Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.

Start the discussion