HER2-positive Breast CancerPhase 1NCT06328738
ELVN-002 With Trastuzumab +/- Chemotherapy in HER2+ Solid Tumors, Colorectal and Breast Cancer
A Phase 1 study testing ELVN-002, Trastuzumab and 5-Fluorouracil in people with HER2-positive Breast Cancer and HER2-positive Gastric Cancer, run by Enliven Therapeutics at 31 sites in 7 countries.
Trial summary
The purpose of this study is to determine the safety, tolerability, and recommended dose of ELVN-002 in combination with trastuzumab in participants with advanced-stage HER2-positive tumors and in combination with trastuzumab, and chemotherapy in participants with advanced-stage HER2-positive colorectal cancer and… Read more about this study
- Who is it for?
- Ages 18 years and older
- Conditions the study is for
- HER2-positive Breast Cancer, HER2-positive Gastric Cancer, HER2 Positive Solid Tumors
- What is being tested?
- ELVN-002, Trastuzumab and 5-Fluorouracil
- Type of treatment
- Pill or oral medicine, Injection or infusion
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 275 participants
- Where
- 31 sitesin 7 countries
- Study dates
- 30 May 2024to Jul 2028
- Phase
- Phase 1
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 years and older
- All sexes
- No healthy volunteers
- Adult, Older adult
Who may be able to join
- Pathologically or histologically documented solid tumor.
- Locally advanced or relapsed/refractory disease or unresectable metastatic disease.
- HER2-positive disease based on the following local testing:
- Colorectal cancer: IHC3+, IHC2+/ISH+, NGS amplification by tissue (no RAS or BRAF mutation allowed)
- Breast cancer: IHC3+ or IHC2+/ISH+ by tissue
- Gastric cancer: IHC3+ or IHC2+/ISH+ by tissue
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- Other cancers: IHC3+, IHC2+/ISH+, NGS amplification by tissue or ctDNA
- Prior therapies for Part 1 (Dose Escalation ELVN-002 + trastuzumab):
- Colorectal cancer: treated with prior fluoropyrimidine, oxaliplatin, irinotecan-based regimens, anti-epidermal growth factor receptor (EGFR) treatment (if clinically indicated), anti-vascular endothelial growth factor (VEGF) treatment (if clinically indicated), and an anti-programmed death ligand 1 (PD-(L)-1) treatment (if the tumor is microsatellite instability (MSI)-high/deficient mismatch repair (dMMR)
- Breast cancer: treated with prior taxane, pertuzumab, trastuzumab, and fam-trastuzumab deruxtecan (T-DXd) if available and appropriate based on local standard of care and investigator's assessment
- Gastric cancer: treated with trastuzumab/platinum fluorouracil containing regimen and T-DXd.
- Other cancers: progressed during or after ≥ 1 prior line of systemic therapy for locally advanced unresectable or metastatic disease
- Prior HER2 targeted therapy is allowed
- Prior therapies for Part 2 (Phase 1a Dose Escalation ELVN-002 + trastuzumab + chemotherapy):
- Colorectal cancer: candidate for CAPEOX (capecitabine and oxaliplatin) or mFOLFOX6 (5-FU, LCV and oxaliplatin), and treated, if clinically indicated, with an anti-programmed death ligand 1 (PD-(L)-1) treatment (if the tumor is microsatellite instability (MSI)-high/deficient mismatch repair (dMMR). Prior HER2 targeted therapy is allowed.
- Breast cancer: candidate for capecitabine, paclitaxel or eribulin, and treated with prior taxane, pertuzumab, trastuzumab, and T-DXd, if available and appropriate, based on local standard of care and investigator's assessment. No prior HER2 targeted tyrosine kinase inhibitor therapy (antibody-drug conjugates and antibodies are allowed), no prior capecitabine (for the capecitabine cohort), no prior eribulin (for the eribulin cohort), and no taxane as immediate prior therapy (paclitaxel cohort).
- Prior therapies for Part 3 (Phase 1b Dose Expansion ELVN-002 + trastuzumab):
- Colorectal cancer: treated with prior fluoropyrimidine, oxaliplatin, irinotecan-based regimens, anti-epidermal growth factor receptor (EGFR) treatment (if clinically indicated), anti-vascular endothelial growth factor (VEGF) treatment (if clinically indicated), and an anti-programmed death ligand 1 (PD-(L)-1) treatment if the tumor is microsatellite instability (MSI)-high/deficient mismatch repair (dMMR). No prior HER2 targeted therapy.
- Breast cancer: treated with prior taxane, pertuzumab, trastuzumab, and T-DXd if available and appropriate based on local standard of care and investigator's assessment. No prior HER2 targeted tyrosine kinase inhibitor therapy (antibody-drug conjugates and antibodies are allowed).
- Gastric cancer: treated with prior trastuzumab/platinum fluorouracil containing regimen and T-DXd. No prior HER2 targeted therapy.
- Other cancers: Progressed during or after ≥ 1 prior line of systemic therapy for locally advanced unresectable or metastatic disease. No prior HER2 targeted therapy.
- Prior therapies for Part 4 (Phase 1b Dose Expansion ELVN-002 + trastuzumab + chemotherapy):
- Colorectal cancer: candidate for CAPEOX or mFOLFOX6 and not a candidate for first-line anti-programmed death ligand 1 (PD-(L)-1) treatment (if the tumor is microsatellite instability (MSI)-high/deficient mismatch repair (dMMR). No prior therapy for metastatic disease (1 cycle of mFOLFOX6 or 1 cycle of CAPEOX allowed). No prior HER2 targeted therapy.
- At least 1 measurable lesion based on RECIST v 1.1 within 6 weeks before the first dose of ELVN-002 (Part 3 and Part 4 only; Phase 1b Dose Expansion cohorts)
- Eastern Cooperative Oncology Group (ECOG) performance status of 0-1
- Adequate hematological, hepatic, renal, and cardiac function
Who cannot join
- Treatment with anticancer therapy within a specific time before the first dose:
- Chemotherapy (including ADC) ≤ 3 weeks
- Immunotherapy ≤ 4 weeks
- Hormonal therapy ≤ 2 weeks
- TKI ≤ 2 weeks
- Any experimental therapy ≤ 3 weeks or 5 half-lives, whichever is longer
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- Radiotherapy-wide therapy ≤ 3 weeks
- Radiotherapy limited field (including stereotactic brain) ≤ 2 weeks
- Antibody ≤ 3 weeks
- Any brain lesion requiring immediate local therapy
- Ongoing use of corticosteroids for central nervous system (CNS) symptoms at a dose of > 2 mg daily of dexamethasone (or equivalent)
- Leptomeningeal disease
- Uncontrolled seizures
- Participants for any chemotherapy cohort: ongoing Grade 2 or higher neuropathy of any cause
- Inability to swallow pills or any significant gastrointestinal disease that would preclude adequate oral absorption of medications.
- Ongoing adverse effects from prior treatment > CTCAE Grade 1 except for Grade 2 alopecia
- Corrected QT interval (QTc) of >470 milliseconds (ms) for females or >450 ms for males
Trial locations and contacts
31 sites in 7 countries.
31 sites in 7 countries
Spain9 sites
NEXT Oncology-Hospital Quironsalud Barcelona
Barcelona, 08023
START Barcelona_HM Nou Delfos
Barcelona, 08023
Hospital Universitari Dexeus - Grupo Quironsalud
Barcelona
Instituto de Investigacion Oncologica Vall d'Hebron (VHIO) - EPON
Barcelona
Hospital Beata Maria Ana
Madrid, 28007
Clinica universitaria Navarra - Madrid
Madrid, 28027
START Madrid - Hospital Universitario Fundacion Jimenez Diaz
Madrid, 28040
Clinica univeritaria Navarra - Pamplonas
Pamplona
Fundacion Instituto Valenciano de Oncologia
Valencia
Italy6 sites
Azienda Ospedaliero-Universitaria Renato Dulbecco
Catanzaro
Istituto Europeo di Oncologia
Milan
Fondazione IRCCS San Gerardo dei Tintori
Monza
Azienda Ospedaliero Universitaria Pisana
Pisa
Azienda USL IRCCS di Reggio Emilia
Reggio Emilia
Fondazione Policlinico A. Gemelli IRCCS
Rome, 00168
South Korea5 sites
CHA Bundang Medical Center
Seongnam-si, 13496
Severance Hospital, Yonsei University Health System
Seoul, 03722
Asan Medical Center
Seoul, 05505
Seoul National University Hospital
Soeul
The Catholic University of Korea, St. Vincent's Hospital
Suwon, 16247
France4 sites
Institut du Cancer de Montpellier - Val D'Aurelle
Montpellier, 34090
CHU de Poitiers
Poitiers, 8600
Institut de Cancérologie de l'Ouest
Saint-Herblain
Institut de Cancérologie Strasbourg Europe
Strasbourg, 67033
United States3 sites
NEXT Virginia
Fairfax, Virginia, 22031
BRCR Medical Center Inc.
Plantation, Florida, 33322
Washington University
St Louis, Missouri, 63110
Belgium3 sites
Cliniques Universitaires Saint-Luc
Brussels
CHU de Liège
Liège
GZA Ziekenhuizen - Campus Sint-Augustinus
Wilrijk
About this study
Official title: A Phase 1a/1b Study of ELVN-002 Combined With Trastuzumab in Advanced Stage HER2+ Solid Tumors, and ELVN-002 Combined With Trastuzumab and Chemotherapy in Advanced Stage HER2+ Colorectal Cancer and Breast Cancer
The purpose of this study is to determine the safety, tolerability, and recommended dose of ELVN-002 in combination with trastuzumab in participants with advanced-stage HER2-positive tumors and in combination with trastuzumab, and chemotherapy in participants with advanced-stage HER2-positive colorectal cancer and breast cancer.
Read the detailed description
Parts 1 and 3 of this study are designed to evaluate preliminary safety, tolerability, and pharmacokinetics (PK) of ELVN-002 in combination with trastuzumab in participants with advanced stage HER2 positive solid tumors. In addition, Part 3 will evaluate the preliminary efficacy of ELVN-002 in combination with trastuzumab in participants with advanced-stage HER2-positive solid tumors.
Part 2 of this study will evaluate the preliminary safety, tolerability, and PK of ELVN-002 in combination with trastuzumab and chemotherapy; capecitabine and oxaliplatin(CAPEOX) or 5-fluorouracil (5-FU), leucovorin (LCV) and oxaliplatin (mFOLFOX6) in participants with advanced stage HER2 positive colorectal cancer, or eribulin or capecitabine in participants with advanced-stage HER2-positive breast cancer, or paclitaxel in participants with advanced stage solid tumors.
In part 4, the preliminary safety, tolerability, PK, and efficacy of ELVN-002 in combination with trastuzumab and CAPEOX or mFOLFOX6 will be evaluated in participants with HER2-positive colorectal cancer.
- Conditions
- HER2-positive Breast Cancer, HER2-positive Gastric Cancer, HER2 Positive Solid Tumors, HER2 Amplification, Colorectal Cancer
- Being tested
- ELVN-002, Trastuzumab, 5-Fluorouracil, Oxaliplatin, Capecitabine
- Keywords
- ELVN-002, HER2 positive Colorectal Cancer, HER2 overexpression, HER2
- Medical subject headings
- Colorectal Neoplasms
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
ELVN-002Drug
capsule
TrastuzumabDrug
intravenous
5-FluorouracilDrug
intravenous
OxaliplatinDrug
intravenous
CapecitabineDrug
capsule
EribulinDrug
intravenous
paclitaxelDrug
intravenous
LeucovorinDrug
intravenous
| Study group | Role | What they receive |
|---|---|---|
| Part 1: ELVN-002 + trastuzumab dose escalation | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Receives: Drug: ELVN-002; Drug: Trastuzumab |
| Part 2A: ELVN-002 + trastuzumab + CAPEOX dose escalation in colorectal cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Capecitabine will be administered orally twice daily at 1000 mg/m2 on days 1 - 14 of a 21-day cycle. Oxaliplatin will be administered intravenously at 130 mg/m2 on day 1 of a 21-day cycle. Receives: Drug: ELVN-002; Drug: Trastuzumab; Drug: Oxaliplatin; Drug: Capecitabine |
| Part 2B: ELVN-002 + trastuzumab + mFOLFOX6 dose escalation in colorectal cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered intravenously at 6 mg/kg IV cycle 1, day 2 followed by 4 mg/kg IV cycle 1, day 15, and then one dose at 4mg/kg IV every 14 days. Fluorouracil (5-FU) will be administered intravenously as a 400 mg/m2 IV bolus on days 1 and 15 followed by 2400 mg/m2 over 46-48 hours of continuous infusion on days 1-3 and days 15-17 of a 28-day cycle. Leucovorin will be administered intravenously at 400 mg/m2 concurrently with oxaliplatin on days 1 and 15 of a 28-day cycle. Oxaliplatin will be administered intravenously at 85 mg/m2 IV on day 1 and 15 of a 28-day cycle. Receives: Drug: ELVN-002; Drug: Trastuzumab; Drug: 5-Fluorouracil; Drug: Oxaliplatin; Drug: Leucovorin |
| Part 2C: ELVN-002 + trastuzumab + capecitabine dose escalation in breast cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Capecitabine will be administered orally twice daily at 1000 mg/m2 on days 1 - 14 of a 21-day cycle. Receives: Drug: ELVN-002; Drug: Trastuzumab; Drug: Capecitabine |
| Part 2D: ELVN-002 + trastuzumab + paclitaxel dose escalation in solid tumors | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Paclitaxel will be administered intravenously at 80 mg/m2 on days 1, 8, and 15 of a 21-day cycle. Receives: Drug: ELVN-002; Drug: Trastuzumab; Drug: paclitaxel |
| Part 2E: ELVN-002 + trastuzumab + eribulin dose escalation in breast cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Eribulin will be administered intravenously at 1.4 mg/m2 on days 1 and 8 of a 21-day cycle. Receives: Drug: ELVN-002; Drug: Trastuzumab; Drug: Eribulin |
| Part 3A: ELVN-002 + trastuzumab dose expansion in colorectal cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+ Receives: Drug: ELVN-002; Drug: Trastuzumab |
| Part 3B: ELVN-002 + trastuzumab dose expansion in breast cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Receives: Drug: ELVN-002; Drug: Trastuzumab |
| Part 3C: ELVN-002 + trastuzumab dose expansion in other solid tumor type 1 | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Receives: Drug: ELVN-002; Drug: Trastuzumab |
| Part 3D: ELVN-002 + trastuzumab dose expansion in other solid tumor type 2 | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Receives: Drug: ELVN-002; Drug: Trastuzumab |
| Part 3E: ELVN-002 + trastuzumab dose expansion in other solid tumor type 3 | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Receives: Drug: ELVN-002; Drug: Trastuzumab |
| Part 4A: ELVN-002 + trastuzumab + CAPEOX dose expansion in colorectal cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Capecitabine will be administered orally twice daily at 1000 mg/m2 on Days 1 - 14 of a 21-day cycle. Oxaliplatin: will be administered intravenously at 130 mg/m2 on Day 1 of a 21-day cycle. Receives: Drug: ELVN-002; Drug: Trastuzumab; Drug: Oxaliplatin; Drug: Capecitabine |
| Part 4B: ELVN-002 + trastuzumab + mFOLFOX6 dose expansion in colorectal cancer | Experimental | ELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered intravenously at 6 mg/kg IV cycle 1, day 2 followed by 4 mg/kg IV cycle 1, day 15, and then one dose at 4mg/kg IV every 14 days. Fluorouracil (5-FU) will be administered intravenously as a 400 mg/m2 IV bolus on days 1 and 15 followed by 2400 mg/m2 over 46-48 hours of continuous infusion on days 1-3 and days 15-17 of a 28-day cycle. Leucovorin will be administered intravenously at 400 mg/m2 concurrently with oxaliplatin on days 1 and 15 of a 28-day cycle. Oxaliplatin will be administered intravenously at 85 mg/m2 IV on days 1 and 15 of a 28-day cycle. Receives: Drug: ELVN-002; Drug: Trastuzumab; Drug: 5-Fluorouracil; Drug: Oxaliplatin; Drug: Leucovorin |
What is being measured
The primary outcome is the main question the study is designed to answer.
Incidence of dose limiting toxicities (DLTs; Phase 1a only)
DLTs will be used to support that the recommended doses for expansion are </= maximum tolerated dose (MTD)
Measured: 21 days
Incidence of adverse events (AEs)
AEs will be used to support that the recommended doses for expansion are likely to be tolerable
Measured: 24 months
Incidence of laboratory abnormalities
Clinically significant laboratory abnormalities will be used to support that the recommended doses for expansion are likely to be tolerable
Measured: 24 months
Incidence of electrocardiogram abnormalities
Clinically significant electrocardiogram abnormalities will be used to support that the recommended doses for expansion are likely to be tolerable
Measured: 24 months
Secondary outcomes (7)
PK parameter of area under the curve of ELVN-002 (Phase 1a only)
The concentration of ELVN-002 measured in the blood over 24 hours at steady state
Measured: 24 months
PK parameter of maximum concentration of ELVN-002 (Phase 1a only)
The maximum concentration of ELVN-002 measured in the blood at any time point at steady state
Measured: 24 months
PK parameter of minimum concentration of ELVN-002 (Phase 1a only)
The minimum concentration of ELVN-002 measured in the blood at any time point at steady
Measured: 24 months
PK parameter of terminal half life of ELVN-002 (Phase 1a only)
The half life of ELVN-002 calculated from the concentration of ELVN-002 measured in blood
Measured: 24 months
Confirmed objective response rate (ORR)
For patients with measurable disease at baseline, confirmed response as assessed by investigator per RECIST v1.1
Measured: 24 months
Duration of response (DOR; Phase 1b only)
The time from the first response to progression or death per RECIST v1.1
Measured: 24 months
Brain metastases response (Phase 1b only)
For patients with measurable brain metastases at baseline, the percent of patients who have a confirmed response per RECIST v1.1
Measured: 24 months
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted25 Mar 2024
- Study start30 May 2024
- Primary completionJan 2027 (estimated)
- Study completionJul 2028 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for HER2-positive Breast CancerStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Model description
- Phase 1a will be a dose escalation of ELVN-002 in combination with fixed doses of trastuzumab or trastuzumab + chemotherapy according to the Bayesian Optimal Interval Design model. Phase 1b will be a dose expansion at one or more doses of ELVN-002.
- Masking
- None (open label)
- Enrolment
- 275 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Enliven Therapeutics
- Sponsor type
- Industry (pharma, biotech, devices)
- Responsible party
- Sponsor
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06328738
- Sponsor's protocol ID
- ELVN-002-003
- Status last verified
- Jul 2025
- First submitted
- 10 Mar 2024
- Last updated
- 19 Nov 2025
- Results posted
- No
- Data monitoring committee
- No
- FDA-regulated drug
- Yes
- FDA-regulated device
- No
Study at a glance
From the registry record, last updated by the sponsor on 19 Nov 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase 1a/1b Study of ELVN-002 Combined With Trastuzumab in Advanced Stage HER2+ Solid Tumors, and ELVN-002 Combined With Trastuzumab and Chemotherapy in Advanced Stage HER2+ Colorectal Cancer and Breast Cancer
- ClinicalTrials.gov ID
- NCT06328738
- Acronym / sponsor ID
- ELVN-002-003
- Conditions
- HER2-positive Breast Cancer, HER2-positive Gastric Cancer, HER2 Positive Solid Tumors, HER2 Amplification, Colorectal Cancer
- Keywords
- ELVN-002, HER2 positive Colorectal Cancer, HER2 overexpression, HER2
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Active, not recruiting
- Enrolment
- 275 participants (estimated)
- Lead sponsor
- Enliven TherapeuticsIndustry (pharma, biotech, devices)
- Study start
- 30 May 2024 (actual)
- Primary completion
- Jan 2027 (estimated)
- Study completion
- Jul 2028 (estimated)
- First posted
- 25 Mar 2024 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
The purpose of this study is to determine the safety, tolerability, and recommended dose of ELVN-002 in combination with trastuzumab in participants with advanced-stage HER2-positive tumors and in combination with trastuzumab, and chemotherapy in participants with advanced-stage HER2-positive colorectal cancer and breast cancer.
Detailed description
Parts 1 and 3 of this study are designed to evaluate preliminary safety, tolerability, and pharmacokinetics (PK) of ELVN-002 in combination with trastuzumab in participants with advanced stage HER2 positive solid tumors. In addition, Part 3 will evaluate the preliminary efficacy of ELVN-002 in combination with trastuzumab in participants with advanced-stage HER2-positive solid tumors.
Part 2 of this study will evaluate the preliminary safety, tolerability, and PK of ELVN-002 in combination with trastuzumab and chemotherapy; capecitabine and oxaliplatin(CAPEOX) or 5-fluorouracil (5-FU), leucovorin (LCV) and oxaliplatin (mFOLFOX6) in participants with advanced stage HER2 positive colorectal cancer, or eribulin or capecitabine in participants with advanced-stage HER2-positive breast cancer, or paclitaxel in participants with advanced stage solid tumors.
In part 4, the preliminary safety, tolerability, PK, and efficacy of ELVN-002 in combination with trastuzumab and CAPEOX or mFOLFOX6 will be evaluated in participants with HER2-positive colorectal cancer.
Study design
- Primary purpose
- Treatment
- Allocation
- Non-randomised
- Intervention model
- Sequential
- Masking
- None (open label)
- Number of arms
- 13
- Model description
- Phase 1a will be a dose escalation of ELVN-002 in combination with fixed doses of trastuzumab or trastuzumab + chemotherapy according to the Bayesian Optimal Interval Design model. Phase 1b will be a dose expansion at one or more doses of ELVN-002.
| Arm | Type | Receives |
|---|---|---|
| Part 1: ELVN-002 + trastuzumab dose escalation | Experimental | Drug: ELVN-002, Drug: TrastuzumabELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. |
| Part 2A: ELVN-002 + trastuzumab + CAPEOX dose escalation in colorectal cancer | Experimental | Drug: ELVN-002, Drug: Trastuzumab, Drug: Oxaliplatin, Drug: CapecitabineELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Capecitabine will be administered orally twice daily at 1000 mg/m2 on days 1 - 14 of a 21-day cycle. Oxaliplatin will be administered intravenously at 130 mg/m2 on day 1 of a 21-day cycle. |
| Part 2B: ELVN-002 + trastuzumab + mFOLFOX6 dose escalation in colorectal cancer | Experimental | Drug: ELVN-002, Drug: Trastuzumab, Drug: 5-Fluorouracil, Drug: Oxaliplatin, Drug: LeucovorinELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered intravenously at 6 mg/kg IV cycle 1, day 2 followed by 4 mg/kg IV cycle 1, day 15, and then one dose at 4mg/kg IV every 14 days. Fluorouracil (5-FU) will be administered intravenously as a 400 mg/m2 IV bolus on days 1 and 15 followed by 2400 mg/m2 over 46-48 hours of continuous infusion on days 1-3 and days 15-17 of a 28-day cycle. Leucovorin will be administered intravenously at 400 mg/m2 concurrently with oxaliplatin on days 1 and 15 of a 28-day cycle. Oxaliplatin will be administered intravenously at 85 mg/m2 IV on day 1 and 15 of a 28-day cycle. |
| Part 2C: ELVN-002 + trastuzumab + capecitabine dose escalation in breast cancer | Experimental | Drug: ELVN-002, Drug: Trastuzumab, Drug: CapecitabineELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Capecitabine will be administered orally twice daily at 1000 mg/m2 on days 1 - 14 of a 21-day cycle. |
| Part 2D: ELVN-002 + trastuzumab + paclitaxel dose escalation in solid tumors | Experimental | Drug: ELVN-002, Drug: Trastuzumab, Drug: paclitaxelELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Paclitaxel will be administered intravenously at 80 mg/m2 on days 1, 8, and 15 of a 21-day cycle. |
| Part 2E: ELVN-002 + trastuzumab + eribulin dose escalation in breast cancer | Experimental | Drug: ELVN-002, Drug: Trastuzumab, Drug: EribulinELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Eribulin will be administered intravenously at 1.4 mg/m2 on days 1 and 8 of a 21-day cycle. |
| Part 3A: ELVN-002 + trastuzumab dose expansion in colorectal cancer | Experimental | Drug: ELVN-002, Drug: TrastuzumabELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+ |
| Part 3B: ELVN-002 + trastuzumab dose expansion in breast cancer | Experimental | Drug: ELVN-002, Drug: TrastuzumabELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. |
| Part 3C: ELVN-002 + trastuzumab dose expansion in other solid tumor type 1 | Experimental | Drug: ELVN-002, Drug: TrastuzumabELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. |
| Part 3D: ELVN-002 + trastuzumab dose expansion in other solid tumor type 2 | Experimental | Drug: ELVN-002, Drug: TrastuzumabELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. |
| Part 3E: ELVN-002 + trastuzumab dose expansion in other solid tumor type 3 | Experimental | Drug: ELVN-002, Drug: TrastuzumabELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. |
| Part 4A: ELVN-002 + trastuzumab + CAPEOX dose expansion in colorectal cancer | Experimental | Drug: ELVN-002, Drug: Trastuzumab, Drug: Oxaliplatin, Drug: CapecitabineELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered IV (intravenously) in 21-day cycles, at 8mg/kg on cycle 1 day 2 followed by a dose of 6mg/kg on day 1 of cycles 2+. Capecitabine will be administered orally twice daily at 1000 mg/m2 on Days 1 - 14 of a 21-day cycle. Oxaliplatin: will be administered intravenously at 130 mg/m2 on Day 1 of a 21-day cycle. |
| Part 4B: ELVN-002 + trastuzumab + mFOLFOX6 dose expansion in colorectal cancer | Experimental | Drug: ELVN-002, Drug: Trastuzumab, Drug: 5-Fluorouracil, Drug: Oxaliplatin, Drug: LeucovorinELVN-002 will be administered by mouth (orally) once or twice a day from cycle 1 day 1 onwards. Trastuzumab will be administered intravenously at 6 mg/kg IV cycle 1, day 2 followed by 4 mg/kg IV cycle 1, day 15, and then one dose at 4mg/kg IV every 14 days. Fluorouracil (5-FU) will be administered intravenously as a 400 mg/m2 IV bolus on days 1 and 15 followed by 2400 mg/m2 over 46-48 hours of continuous infusion on days 1-3 and days 15-17 of a 28-day cycle. Leucovorin will be administered intravenously at 400 mg/m2 concurrently with oxaliplatin on days 1 and 15 of a 28-day cycle. Oxaliplatin will be administered intravenously at 85 mg/m2 IV on days 1 and 15 of a 28-day cycle. |
Who may qualify
- Ages
- 18 years and older
- Sex
- All
- Healthy volunteers
- Not accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (26 listed)
- Pathologically or histologically documented solid tumor.
- Locally advanced or relapsed/refractory disease or unresectable metastatic disease.
- HER2-positive disease based on the following local testing:
- Prior therapies for Part 1 (Dose Escalation ELVN-002 + trastuzumab):
- Prior therapies for Part 2 (Phase 1a Dose Escalation ELVN-002 + trastuzumab + chemotherapy):
Key exclusion criteria (17 listed)
- Treatment with anticancer therapy within a specific time before the first dose:
- Any brain lesion requiring immediate local therapy
- Ongoing use of corticosteroids for central nervous system (CNS) symptoms at a dose of > 2 mg daily of dexamethasone (or equivalent)
- Leptomeningeal disease
- Uncontrolled seizures
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| ELVN-002capsule | Drug | Part 1: ELVN-002 + trastuzumab dose escalation, Part 2A: ELVN-002 + trastuzumab + CAPEOX dose escalation in colorectal cancer, Part 2B: ELVN-002 + trastuzumab + mFOLFOX6 dose escalation in colorectal cancer, Part 2C: ELVN-002 + trastuzumab + capecitabine dose escalation in breast cancer, Part 2D: ELVN-002 + trastuzumab + paclitaxel dose escalation in solid tumors, Part 2E: ELVN-002 + trastuzumab + eribulin dose escalation in breast cancer, Part 3A: ELVN-002 + trastuzumab dose expansion in colorectal cancer, Part 3B: ELVN-002 + trastuzumab dose expansion in breast cancer, Part 3C: ELVN-002 + trastuzumab dose expansion in other solid tumor type 1, Part 3D: ELVN-002 + trastuzumab dose expansion in other solid tumor type 2, Part 3E: ELVN-002 + trastuzumab dose expansion in other solid tumor type 3, Part 4A: ELVN-002 + trastuzumab + CAPEOX dose expansion in colorectal cancer, Part 4B: ELVN-002 + trastuzumab + mFOLFOX6 dose expansion in colorectal cancer |
| Trastuzumabintravenous | Drug | Part 1: ELVN-002 + trastuzumab dose escalation, Part 2A: ELVN-002 + trastuzumab + CAPEOX dose escalation in colorectal cancer, Part 2B: ELVN-002 + trastuzumab + mFOLFOX6 dose escalation in colorectal cancer, Part 2C: ELVN-002 + trastuzumab + capecitabine dose escalation in breast cancer, Part 2D: ELVN-002 + trastuzumab + paclitaxel dose escalation in solid tumors, Part 2E: ELVN-002 + trastuzumab + eribulin dose escalation in breast cancer, Part 3A: ELVN-002 + trastuzumab dose expansion in colorectal cancer, Part 3B: ELVN-002 + trastuzumab dose expansion in breast cancer, Part 3C: ELVN-002 + trastuzumab dose expansion in other solid tumor type 1, Part 3D: ELVN-002 + trastuzumab dose expansion in other solid tumor type 2, Part 3E: ELVN-002 + trastuzumab dose expansion in other solid tumor type 3, Part 4A: ELVN-002 + trastuzumab + CAPEOX dose expansion in colorectal cancer, Part 4B: ELVN-002 + trastuzumab + mFOLFOX6 dose expansion in colorectal cancer |
| 5-Fluorouracilintravenous | Drug | Part 2B: ELVN-002 + trastuzumab + mFOLFOX6 dose escalation in colorectal cancer, Part 4B: ELVN-002 + trastuzumab + mFOLFOX6 dose expansion in colorectal cancer |
| Oxaliplatinintravenous | Drug | Part 2A: ELVN-002 + trastuzumab + CAPEOX dose escalation in colorectal cancer, Part 2B: ELVN-002 + trastuzumab + mFOLFOX6 dose escalation in colorectal cancer, Part 4A: ELVN-002 + trastuzumab + CAPEOX dose expansion in colorectal cancer, Part 4B: ELVN-002 + trastuzumab + mFOLFOX6 dose expansion in colorectal cancer |
| Capecitabinecapsule | Drug | Part 2A: ELVN-002 + trastuzumab + CAPEOX dose escalation in colorectal cancer, Part 2C: ELVN-002 + trastuzumab + capecitabine dose escalation in breast cancer, Part 4A: ELVN-002 + trastuzumab + CAPEOX dose expansion in colorectal cancer |
| Eribulinintravenous | Drug | Part 2E: ELVN-002 + trastuzumab + eribulin dose escalation in breast cancer |
| paclitaxelintravenous | Drug | Part 2D: ELVN-002 + trastuzumab + paclitaxel dose escalation in solid tumors |
| Leucovorinintravenous | Drug | Part 2B: ELVN-002 + trastuzumab + mFOLFOX6 dose escalation in colorectal cancer, Part 4B: ELVN-002 + trastuzumab + mFOLFOX6 dose expansion in colorectal cancer |
Primary outcome
Incidence of dose limiting toxicities (DLTs; Phase 1a only)
Time frame: 21 days
DLTs will be used to support that the recommended doses for expansion are </= maximum tolerated dose (MTD)
Incidence of adverse events (AEs)
Time frame: 24 months
AEs will be used to support that the recommended doses for expansion are likely to be tolerable
Incidence of laboratory abnormalities
Time frame: 24 months
Clinically significant laboratory abnormalities will be used to support that the recommended doses for expansion are likely to be tolerable
Incidence of electrocardiogram abnormalities
Time frame: 24 months
Clinically significant electrocardiogram abnormalities will be used to support that the recommended doses for expansion are likely to be tolerable
7 secondary outcomes
PK parameter of area under the curve of ELVN-002 (Phase 1a only)
Time frame: 24 months
PK parameter of maximum concentration of ELVN-002 (Phase 1a only)
Time frame: 24 months
PK parameter of minimum concentration of ELVN-002 (Phase 1a only)
Time frame: 24 months
PK parameter of terminal half life of ELVN-002 (Phase 1a only)
Time frame: 24 months
Confirmed objective response rate (ORR)
Time frame: 24 months
Duration of response (DOR; Phase 1b only)
Time frame: 24 months
Brain metastases response (Phase 1b only)
Time frame: 24 months
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 19 Nov 2025.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
The record lists no contact. Use the official record to reach the sponsor.
31 sites in 7 countries: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing ELVN-002, Trastuzumab and 5-Fluorouracil in people with HER2-positive Breast Cancer and HER2-positive Gastric Cancer, run by Enliven Therapeutics at 31 sites in 7 countries.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 26 inclusion and 17 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: under way, not looking for participants, as of the sponsor's last update on 19 Nov 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 31 sites in Spain, Italy, South Korea, France, United States and 2 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Incidence of dose limiting toxicities (DLTs; Phase 1a only) (time frame: 21 days). The study lists 4 primary outcomes in all. It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 19 Nov 2025.