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ECI830

Phase 1

Advanced HR+/HER2- Breast Cancer | Small molecule | Oncology |Novartis AG|Last Updated: Aug 27, 2026

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDDMC
Total Trials1
Total Enrollment280

FDA Designations

No designations recorded

Clinical trial landscape

ECI830 · 1 trial · 3 indications

Phase 1 1
NCT06726148Study of ECI830 Single Agent or in Combination in Patients With Advanced HR+/HER2- Breast Cancer and in Patients With Other Advanced Solid TumorsAdvanced HR+/HER2- Breast Cancer
RECRUITING280 Analytics
PHASE1RECRUITING
Study of ECI830 Single Agent or in Combination in Patients With Advanced HR+/HER2- Breast Cancer and in Patients With Other Advanced Solid Tumors
Advanced HR+/HER2- Breast CancerUnlock trial analytics

Study Endpoints

Primary Endpoints

Phase I: Incidence of dose-limiting toxicities (DLTs)
2 years

A DLT is defined as an adverse event or abnormal laboratory value of Common Terminology Criteria for Adverse Events (CTCAE) grade ≥ 3 assessed as unrelated to disease, disease progression, inter-current illness or concomitant medications that occurs within the first 28 days of treatment. Other clinically significant toxicities may be considered to be DLTs, even if not CTCAE grade 3 or higher.

Phase I: Incidence of adverse events (AEs) and serious adverse events (SAEs)
2 years

Number of participants with AEs and SAEs by treatment group, including changes in vital signs, electrocardiograms (ECGs) and laboratory results qualifying and reported as AEs.

Phase I: Number of participants with dose interruptions, reductions and discontinuations
2 years

Assessment of tolerability. For patients who do not tolerate the protocol-specified dosing schedule, dose adjustments are permitted in order to allow patients to continue the study treatment.

Phase II: PFS rate at 6 months per local response evaluation criteria in solid tumors (RECIST) v1.1
6 months

Progression Free Survival (PFS) rate at 6 months is defined as the proportion of patients who are alive and progression-free per RECIST v1.1 at 6 months.

Secondary Endpoints

Phase I and II: Area under the plasma concentration-time curve (AUC) of ECI830 and ribociclib
From pre-dose up to 24 hours post-dose in Cycle 1. One cycle=28 days.
Phase I and II: Maximum observed plasma concentration (Cmax) of ECI830 and ribociclib
From pre-dose up to 24 hours post-dose in Cycle 1. One cycle=28 days.
Phase I and II: Best overall response (BOR) per RECIST v1.1
2 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ECI830 Single Agent (Arm A)EXPERIMENTALPhase I
Dose Escalation Combination ECI830 + ribociclib + fulvestrant (Arm B)EXPERIMENTALPhase I
Ribociclib in combination with fulvestrant (Arm C)EXPERIMENTALPhase II
ECI830 in combination with fulvestrant (Arm D)EXPERIMENTALPhase II
ECI830 in combination with ribociclib and fulvestrant (Arm E)EXPERIMENTALPhase II
ECI830 in combination with ribociclib and fulvestrant (Arm F)EXPERIMENTALPhase II

Interventions

NameTypeDescription
ECI830DRUGExperimental
ribociclibDRUGApproved medication
fulvestrantDRUGApproved medication
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Eligibility Criteria

Age Range18 Years to 100 Years
SexALL
Healthy VolunteersNo
Study Sites33

Inclusion Criteria: Age ≥ 18 years old. Patients with one of the following indications: Phase I: HR+/HER2- aBC with disease progression on or following at least one line of hormone-based therapy in combination with a CDK4/6i and at least one additional line of systemic therapy for metastatic dis...

Countries:United StatesAustraliaCanadaChinaCzechiaDenmarkFranceGermanyIsraelItalyJapanSingaporeSouth KoreaSpainTaiwanUnited Kingdom
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Competitive Landscape -Breast Cancer 402 trials (matched to "Advanced HR+/HER2- Breast Cancer")

Top 20 of 92 competitors

CompanyTickerTrialsLead PhaseDrugs
AstraZeneca PLCAZN47PHASE3Fulvestrant, Capivasertib
Merck & Co., Inc.MRK12PHASE3Pembrolizumab, Paclitaxel, Doxorubicin, Epirubicin, Cyclophosphamide
Eli Lilly and CompanyLLY27PHASE3Abemaciclib, Standard Adjuvant Endocrine Therapy
BioNTech SE Sponsored ADRBNTX7PHASE3DB-1303/BNT323, T-DM1
Gilead Sciences, Inc.GILD13PHASE3Sacituzumab Govitecan-hziy, Eribulin, Capecitabine Product, Gemcitabine, Vinorelbine
Novartis AG Sponsored ADRNVS30PHASE3Ribociclib
Pfizer Inc.PFE34PHASE3ARV-471, Fulvestrant
BeOne Medicines Ltd. Sponsored ADRONC5PHASE3BGB-43395, Letrozole, Abemaciclib, Palbociclib, Ribociclib
Olema Pharmaceuticals, Inc.OLMA5PHASE3Palazestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane
Jazz Pharmaceuticals Public Limited CompanyJAZZ3PHASE3Zanidatamab, Trastuzumab, Eribulin, Vinorelbine, Gemcitabine
Celcuity Inc.CELC3PHASE3Gedatolisib, Palbociclib, Fulvestrant, Alpelisib
Relay Therapeutics, Inc.RLAY2PHASE3Zovegalisib, Capivasertib, Fulvestrant
GSK plc Sponsored ADRGSK2PHASE3Niraparib
Greenwich LifeSciences, Inc.GLSI1PHASE3GLSI-100
Bristol-Myers Squibb CompanyBMY5PHASE2Iza-bren, Nab-paclitaxel, Paclitaxel, Capecitabine, Carboplatin
BriaCell Therapeutics CorpBCTX2PHASE3SV-BR-1-GM, Cyclophosphamide, Interferon infiltration of the inoculation site, Retifanlimab, Treatment of Physician's Choice
Incyte CorporationINCY4PHASE2Ruxolitinib, Capecitabine, Regorafenib
Natera, Inc.NTRA3PHASE2Discontinuation of the anti-HER2 maintenance therapy
Puma Biotechnology, Inc.PBYI3PHASE2Neratinib, Loperamide, Colesevelam
Atossa Therapeutics, Inc.ATOS1PHASE2endoxifen, goserelin
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Recent Changes (Last 90 Days)

LOWAug 27, 2026NCT06726148lastUpdatePostDate: changed
LOWAug 27, 2026NCT06726148lastUpdatePostDate: changed
LOWJul 13, 2026NCT06726148lastUpdatePostDate: changed
LOWJul 13, 2026NCT06726148lastUpdatePostDate: changed
LOWJun 23, 2026NCT06726148lastUpdatePostDate: changed
LOWJun 23, 2026NCT06726148lastUpdatePostDate: changed

Frequently asked questions about ECI830

What is ECI830 used for?

ECI830 is an investigational small molecule being studied for the treatment of advanced HR+/HER2- breast cancer. It is also being evaluated in patients with advanced CCNE1-amplified solid tumors and extensive-stage small cell lung cancer. The drug is currently in Phase 1 clinical development.

Who is developing ECI830?

ECI830 is being developed by Novartis AG, a global pharmaceutical company traded on the New York Stock Exchange under the ticker symbol NVS. The drug is currently in Phase 1 clinical trials for advanced HR+/HER2- breast cancer and other advanced solid tumors.

What phase is ECI830 in?

ECI830 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 1 trial is actively recruiting participants to evaluate the safety and efficacy of ECI830 as a single agent or in combination therapy.

What clinical trials is ECI830 in?

ECI830 is being studied in a Phase 1 clinical trial with the identifier NCT06726148. This trial is recruiting 280 participants and is evaluating ECI830 as a single agent or in combination for patients with advanced HR+/HER2- breast cancer, advanced CCNE1-amplified solid tumors, and extensive-stage small cell lung cancer.

Is ECI830 being tested in a randomized controlled trial?

Yes, the Phase 1 clinical trial of ECI830 is randomized and controlled. The study is not double-blinded, but it does include a control group. The trial is actively recruiting participants across multiple countries, including the United States, Australia, Canada, China, and several European and Asian nations.