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Panitumumab

Phase 3

Colorectal Cancer | Small molecule | Oncology |Amgen Inc.|Last Updated: Oct 21, 2024

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedCONTROLLEDDMCBiomarker
Total Trials9
Total Enrollment2,445
FDA Designations
No designations recorded
Clinical Trials (9)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT03635021Study to Evaluate the Efficacy of FOLFOX + Panitumumab Followed by FOLFIRI + Bevacizumab (Sequence 1) Versus FOLFOX + Bevacizumab Followed by FOLFIRI + Panitumumab (Sequence 2) in Untreated Patients With Wild-type RAS Metastatic, Primary Left-sided, Unresectable Colorectal CancerPHASE3 ACTIVE NOT_RECRUITING 419Oct 15, 2018Jun 28, 2025Oct 21, 20241 Spain
NCT00115765PACCE: Panitumumab Advanced Colorectal Cancer Evaluation StudyPHASE3 COMPLETED 1,053Jun 1, 2005May 1, 2009Oct 17, 2018 -
NCT00113763Evaluating Panitumumab (ABX-EGF) Plus Best Supportive Care Versus Best Supportive Care in Patients With Metastatic Colorectal CancerPHASE3 COMPLETED 463Jan 1, 2004Jun 1, 2009Nov 7, 2022 -
NCT00940316Dual Epidermal Growth Factor Receptor Inhibition With Erlotinib and Panitumumab With or Without Chemotherapy for Advanced Colorectal CancerPHASE2 COMPLETED 28Jan 18, 2010Jan 1, 2015May 7, 201910 United States
NCT00842257Panitumumab in Cetuximab Refractory KRAS Wild-Type Colorectal CancerPHASE2 COMPLETED 20May 1, 2009Dec 1, 2011May 16, 20173 United States
NCT00089635Panitumumab (ABX-EGF) Monotherapy in Patients With Metastatic Colorectal CancerPHASE2 COMPLETED 203Aug 1, 2004Aug 1, 2008Nov 7, 2022 -
NCT00083616Evaluating Panitumumab (ABX-EGF) Monotherapy in Patients With Metastatic Colorectal Cancer Following Treatment With Fluoropyrimidine, Irinotecan, and Oxaliplatin ChemotherapyPHASE2 COMPLETED 185Mar 1, 2004Dec 1, 2008Jan 10, 2014 -
NCT00425204Study for Patients Who Have Benefited and Tolerated Prior Panitumumab TreatmentPHASE2 COMPLETED 31Mar 1, 2004Mar 1, 2008Sep 15, 2008 -
NCT00111761Evaluating Panitumumab (ABX-EGF) in Patients With Metastatic Colorectal CancerPHASE2 COMPLETED 43Jul 1, 2002Oct 1, 2008Dec 12, 2013 -
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Study Endpoints
Primary Endpoints
Progression-free survival rate at 35 months
35 months after date of randomization

35-month PFSR defined as the number of patients, who at 35 months after randomization, have not had second or first disease progression nor died (due to any cause), over the total number of evaluable patients.

Progression-Free Survival (Oxaliplatin)
Overall study

Kaplan-Meier estimate of the median time from randomization to death from any cause or first observed disease progression

Objective Tumor Response Through Week 12 (Irinotecan)
Overall Study

Objective tumor response (complete or partial) rate through week 12 based on central review in the Irinotecan stratum

Progression-free Survival Time
From randomization to the data cut-off date of 30 June 2005. The median follow-up time was 20.0 weeks in the panitumumab plus BSC group and 18.2 weeks in the BSC alone group.

Kaplan-Meier estimates of median time from randomization to either death or first observed disease progression, whichever occurred first. Participants were evaluated for tumor response according to modified Response Evaluation Criteria in Solid Tumors (RECIST) based on the response assessment from a blinded review of radiographic scans by the Independent Review Committee. Progressive disease defined as least a 20% increase in the sum of the longest diameters (SLD) of target lesions, taking as reference the nadir SLD recorded since the treatment started or the appearance of one or more new lesions, or the unequivocal progression of existing non-target lesions.

Tumor Response Rate Based on Complete Response (CR)+ Partial Response (PR) + Stable Disease (SD)
At baseline and every 8 weeks during treatment until progressive disease for maximum of 51 cycles where 1 cycle = 2 weeks.

Tumor response rate will be measured by CT scan of the chest and CT scan or MRI scan of abdomen and pelvis every 8 weeks until disease progression response rate will be measured per Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions evaluated using Response Evaluation Criteria In Solid Tumors Criteria (RECIST v1.0) for target lesions. Complete Response (CR): Disappearance of all target lesions. Partial Response (PR): At least a 30% decrease in the sum of the longest diameter (LD)of target lesions, taking as reference the baseline sum LD. Progressive Disease (PD): At least a 20% increase in the sum of the LD of target lesions,taking as reference the smallest sum LD recorded since the treatment started or the appearance of one or more new lesions. Stable Disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD, taking as reference the smallest sum LD since the treatment started

Response Rate of Single Agent Panitumumab Among Patients With KRAS Wild-type Colorectal Cancer Previously Treated With Cetuximab.
3 years

The response rate of single agent panitumumab among patients with KRAS wild-type (Kirsten rat sarcoma viral oncogene homolog) colorectal cancer previously treated with cetuximab. Inclusive of three patients with clinical progression prior to first re-staging CT scans. Response rate evaluated using RECIST (Response Evaluation Criteria In Solid Tumors). Best overall response is recorded from the start of the treatment until disease progression/recurrence (taking as reference for progressive disease the smallest measurements recorded since the treatment started). RECIST: Complete Response (CR): Disappearance of all target lesions Partial Response (PR): At least a 30% decrease in the sum of the LD (longest diameter) of target lesions Stable Disease (SD): Neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for PD Progressive Disease (PD): At least a 20% increase in the sum of the LD of target lesions

Objective Tumor Response Through Week 16
From enrollment through Week 16

Confirmed objective tumor response was defined as a complete response or partial response from enrollment through Week 16. Tumor response was monitored, beginning at Week 8, per a modified version of the World Health Organization (WHO) criteria for tumor response and progression by an independent review committee central assessment. Complete response was defined per modified WHO criteria as disappearance of all lesions (index and non-index). Partial response was defined as ≥ 50% decrease from Baseline in the sum of the products of the longest diameters (SPD) of index lesions. Scans were required to confirm a complete or partial response no earlier than 4 weeks from the time a response of complete or partial response was first documented.

Duration of Response
From enrollment until the data cut-off date of 22 December 2006. The median follow-up time was 36 weeks.

Kaplan-Meier estimate of time time from first objective response to first observed progression of disease or death if the death was due to disease progression (whichever comes first) among participants who had a response at any time on study. Participants who responded and did not progress while on study or who died for reasons other than disease progression while on study were censored at their last evaluable assessment date.

Number of Participants With Objective Tumor Response Through Week 16
16 weeks

Confirmed objective tumor response (complete or partial response) based on modified World Health Organization (WHO) criteria, through week 16. Tumor response was assessed by a central Independent Review Committee (IRC) and confirmation 4 weeks after initial assessment was required. Complete Response (CR): Disappearance of all index and non-index lesions and no new lesions. Partial Response (PR): At least a 50% decrease in the sum of the product of the longest diameters (SPD) of index lesions taking as reference the Baseline SPD, and no new non-index lesions and no "unequivocal progression" of non-index lesions, or, the disappearance of all index lesions and persistence of one or more non-index lesions not qualifying for either CR or Progressive Disease.

To provide continued, extended panitumumab treatment to subjects who appeared to have benefited from and tolerated previous panitumumab treatment in Studies 20020374 Part 2 or 20030138 and its extension study, 20040116
Until disease progression, an AE or withdrawn consent
Number of Participants With Grade 3 or Grade 4 Diarrhea (Part 2)
Until disease progression (median 47 weeks)

The number of participants with grade 3 or grade 4 diarrhea in Part 2 of the study. Grading of diarrhea followed the grading scale in Version 2.0 of the National Cancer Institute Common Toxicity Criteria (NCI CTC).

Number of Participants With Grade 3 or Grade 4 Diarrhea (Part 1)
Until disease progression (median 35 weeks) or 48 weeks, whichever occurred first

The number of participants with grade 3 or grade 4 diarrhea in Part 1 of the study. Grading of diarrhea followed the grading scale in Version 2.0 of the National Cancer Institute Common Toxicity Criteria (NCI CTC).

Secondary Endpoints
overall survival rate at 35 months
35 months after date of randomization
overall survival
Baseline through the end of the study (up 72 months)
progression-free from randomization to second progression or death
Baseline through the end of the study (up 72 months)
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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
Sequence 1EXPERIMENTALFOLFOX regimen panitumumab FOLFIRI regimen bevacizumab
Sequence 2EXPERIMENTALFOLFOX regimen bevacizumab FOLFIRI regimen panitumumab
Oxaliplatin and bevacizumab without panitumumabACTIVE_COMPARATOROxaliplatin-based chemotherapy and Bevacizumab Q2W alone.
Irinotecan and bevacizumab plus panitumumabEXPERIMENTALIrinotecan-based chemotherapy and Bevacizumab Q2W plus panitumumab 6mg/kg Q2W
Irinotecan and bevacizumab without panitumumabACTIVE_COMPARATORIrinotecan-based chemotherapy and Bevacizumab Q2W alone
Oxaliplatin and bevacizumab plus panitumumabEXPERIMENTALOxaliplatin-based chemotherapy and Bevacizumab Q2W plus panitumumab 6mg/kg Q2W
Panitumumab plus best supportive careEXPERIMENTALPanitumumab will be administered by intravenous infusion at a dose of 6 mg/kg once every 2 weeks until participants develop progressive disease or are unable to tolerate study drug. Participants will also receive best supportive care (BSC) as judged appropriate by the investigator and according to institutional guidelines.
Best Supportive CareOTHERBest supportive care will be defined in this study as the best care available as judged appropriate by the investigator and according to institutional guidelines and will include antibiotics, analgesics, radiation therapy for pain control (limited to bone metastases), corticosteroids, transfusions, psychotherapy, growth factors, palliative surgery, or any symptomatic therapy as clinically indicated. For the purpose of this study, best supportive care will not include anti-neoplastic chemotherapy.
Arm A: Erlotinib + Panitumumab + IrinotecanEXPERIMENTALPatients receive oral erlotinib hydrochloride once daily on days 1-14, panitumumab IV over 30-90 minutes on day 1, and irinotecan hydrochloride IV over 90 minutes on day 1. Treatment repeats every 2 weeks in the absence of disease progression or unacceptable toxicity.
Arm B: Erlotinib + PanitumumabEXPERIMENTALPatients receive oral erlotinib hydrochloride once daily on days 1-14 and panitumumab IV over 30-90 minutes on day 1. Treatment repeats every 2 weeks in the absence of disease progression or unacceptable toxicity. Upon disease progression, patients receive irinotecan hydrochloride as in arm A.
Arm C: Erlotinib + PanitumumabEXPERIMENTALPatients receive erlotinib hydrochloride and panitumumab as in arm B.
PanitumumabEXPERIMENTALPanitumumab administered by a central line infusion on days 1 and 15 of each 4 week cycle.
Open LabelEXPERIMENTALDose received in previous studies will be rolled over to this study. These regimens include: 2.5 mg/kg weekly; 6.0 mg/kg every 2 weeks; and 9.0 mg/kg every 3 weeks.
Part 1: Panitumumab + IFLEXPERIMENTALPanitumumab (2.5 mg/kg once weekly for up to 48 weeks or until disease progression, intolerable adverse event or other reason for discontinuation) in combination with irinotecan, 5-fluorouracil (5-FU)and leucovorin (IFL chemotherapy regimen)
Part 2: Panitumumab + FOLFIRIEXPERIMENTALPanitumumab (2.5 mg/kg once weekly until disease progression, intolerable adverse event or other reason for discontinuation) in combination with irinotecan/5-FU/leucovorin chemotherapy (the FOLFIRI regimen)
Interventions
NameTypeDescription
FOLFOX regimenDRUGoxaliplatin 85 mg/m2 administered by IV infusion over 120 minutes on Day 1, L-leucovorin 200 mg/m2 administered as a 2-hour IV infusion on Day 1 and 5-FU 400 mg/m2 administered as IV bolus over approximately 2 to 4 minutes on Day 1 followed by 5-FU 2400 mg/m2 administered as IV infusion over 46- 48 hours on Days 1 and 2
PanitumumabDRUG6 mg/kg administered by intravenous (IV) infusion over 60 minutes on Day 1 of each 14-day cycle
BevacizumabDRUG5 mg/kg administered by IV infusion over 60 minutes on Day 1 of each 14-day cycle
FOLFIRI regimenDRUGirinotecan 180 mg/m2 administered as a 90 minutes IV infusion on Day 1, L-leucovorin 200 mg/m2 administered as a 2-hour IV infusion on Day 1 and 5-FU 400 mg/m2 administered as IV bolus over approximately 2 to 4 minutes on Day 1 followed by 5-FU 2400 mg/m2 administered as IV infusion over 46-48 hours on Days 1 and 2
Oxaliplatin Based ChemotherapyDRUGOxaliplatin-based Chemotherapy Every 2 Week Regimens (Q2W Cycles) consisting of Oxaliplatin, Leucovorin (LV), 5-Fluorouracil (5-FU) - To be determined by physician. On Day 1 irinotecan and LV are given at the same time using different bags and a Y-line followed by 5-FU administration.
Irinotecan Based ChemotherapyDRUGIrinotecan-based Chemotherapy Every 2 Week Regimens (Q2W Cycles) - Irinotecan, Leucovorin (LV), 5-Fluorouracil (5-FU) - To be determined by physician. On Day 1 irinotecan and LV are given at the same time using different bags and a Y-line followed by 5-FU administration.
Best supportive careOTHERBest supportive care as site routine excluding: antineoplastic chemotherapy, investigational agents, anti-EGFr(Epidermal growth factor receptor) targeting agents other than ABX-EGF(Panitumumab), experimental or approved anti-tumor therapies (e.g. Avastin), chemotherapy, radiotherapy (with the exception of radiotherapy for pain control limited to bone metastases).
erlotinib hydrochlorideDRUGGiven orally 150mg daily
irinotecan hydrochlorideDRUGGiven intravenously 120mg/m2 for 6/6 genotype and 60mg/m2 for 6/7 genotype
Panitumumab (ABX-EGF)DRUGDose received in previous studies will be rolled over to this study. These regimens include: 2.5 mg/kg weekly; 6.0 mg/kg every 2 weeks; and 9.0 mg/kg every 3 weeks.
IrinotecanDRUGPart 1: 125 mg/m\^2 IV infusion once a week on weeks 1 through 4 of each 6-week treatment cycle. Part 2: 180 mg/m\^2 IV infusion every other week until disease progression or unable to tolerate.
5-FluorouracilDRUGPart 1: IV bolus 500 mg/m\^2 on weeks 1 through 4 of each 6-week cycle. Part 2: IV bolus 400 mg/m\^2 and infusional 2400-3000 mg/m\^2 over 46 hours once every other week until disease progression or unable to tolerate.
LeucovorinDRUGPart 1: IV bolus 20 mg/m\^2 on weeks 1 through 4 of each 6-week cycle. Part 2: 400 mg/m\^2 every other week until disease progression or unable to tolerate.
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Eligibility Criteria
Age Range18 Years — N/A
SexALL
Healthy VolunteersNo
Study Sites1

Inclusion Criteria: 1. Man or woman at least 18 years old. 2. Capable of understand, sign and date an informed consent approved by an IEC. 3. Histologically confirmed adenocarcinoma of the left colon or rectum (originate in the splenic flexure, descending colon, sigmoid colon, or rectum) in patient...

Countries:SpainUnited States
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Competitive Landscape -Colorectal Cancer 263 trials
CompanyTickerTrialsLead PhaseDrugs
AbbVie, Inc.ABBV8PHASE3Telisotuzumab Adizutecan, Telisotuzumab adizutecan, Bevacizumab, Trifluridine/Tipiracil, ABBV-400
Bristol-Myers Squibb CompanyBMY7PHASE3Ipilimumab, Oxaliplatin, Leucovorin, Fluorouracil, Irinotecan
Merck & Co., Inc.MRK6PHASE3Pembrolizumab, Oxaliplatin, Leucovorin, 5-fluorouracil, Irinotecan
Johnson & JohnsonJNJ5PHASE3Amivantamab, Cetuximab, 5-fluorouracil, Leucovorin calcium/Levoleucovorin, Oxaliplatin
Pfizer Inc.PFE12PHASE3PF-08634404, Bevacizumab, Chemotherapy, tucatinib, trastuzumab
GSK plc Sponsored ADRGSK6PHASE3Dostarlimab, CAPEOX, FOLFOX, GSK4418959, PD-1 inhibitor
Exelixis, Inc.EXEL5PHASE3XL092, Atezolizumab, Regorafenib, cabozantinib, atezolizumab
Summit Therapeutics IncSMMT3PHASE3Drug: Ivonescimab, Drug: Bevacizumab, AK112, AK117, Oxaliplatin
Natera, Inc.NTRA4PHASE3Capecitabine, Oxaliplatin, Folfirinox, FOLFOX regimen
Agenus Inc.AGEN4PHASE3Balstilimab, Botensilimab, CR6086, AGEN2034
Incyte CorporationINCY2PHASE3INCA33890, Bevacizumab, FOLFOX, Ruxolitinib, Capecitabine
Amgen Inc.AMGN1PHASE3FOLFIRI Regimen, Sotorasib, Panitumumab, Bevacizumab-awwb
Eli Lilly and CompanyLLY8PHASE2LY2157299, Capecitabine, Fluorouracil, LY4066434., Cetuximab
AstraZeneca PLCAZN8PHASE2Datopotamab deruxtecan, Capecitabine, 5-Fluorouracil, Volrustomig, Carboplatin
Takeda Pharmaceutical Co. Ltd. Sponsored ADRTAK5PHASE2fruquintinib, FOLFIRI, oxaliplatin , levofolinate calcium , 5-FU, panitumumab, mFOLFOX6 + panitumumab combination therapy
Novartis AG Sponsored ADRNVS7PHASE2Dabrafenib, Trametinib, JDQ443, TNO155, tislelizumab
BioNTech SE Sponsored ADRBNTX3PHASE2RO7198457, PM8002, Chemotherapy Regimen 1, BNT314, BNT327
Regeneron Pharmaceuticals, Inc.REGN2PHASE2Cemiplimab + Fianlimab, VV1, Cemiplimab
Revolution Medicines, Inc.RVMD7PHASE1RMC-6291, Elironrasib, Daraxonrasib, RMC-9805, RMC-6236
Veracyte, Inc.VCYT1PHASE3Tislelizumab
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Recent Changes (Last 90 Days)
LOWMay 24, 2026NCT03635021studyFirstPostDate: changed