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A phase III, multicenter, randomized, open-label trial to evaluate efficacy and safety of ribociclib with endocrine therapy as an adjuvant treatment in patients with hormone receptor-positive, HER2-negative, early breast cancer (New Adjuvant TriAl with Ribociclib [LEE011]: NATALEE)

Status
Active, not recruiting
Phases
Phase 3
Study type
Interventional
Source
EU CTIS
Registry ID
CTIS2023-510357-42-00
Acronym
CLEE011O12301C
Enrollment
2394
Registered
2024-07-15
Start date
2019-05-22
Completion date
Unknown
Last updated
2026-01-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

early breast cancer (EBC)., HER2-negative, hormone receptor (HR)-positive

Brief summary

iDFS using STEEP criteria, as assessed by Investigator

Detailed description

RFS using STEEP criteria, DDFS using STEEP criteria, OS defined as time from date of randomization to date of death due to any cause, Change from baseline in the physical functioning sub-scale score and global health status/ QoL scale score as assessed by EORTC QLQ-C30, Frequency and severity of AEs, laboratory and Electrocardiogram (ECG) abnormalities, PK parameters such as Ctrough and other applicable parameters for ribociclib

Interventions

DRUGGOSERELIN
DRUGLETROZOLE
DRUGANASTROZOLE
DRUGRIBOCICLIB

Sponsors

Novartis Pharma AG
Lead SponsorINDUSTRY

Eligibility

Sex/Gender
All
Age
18 Years to No maximum

Design outcomes

Primary

MeasureTime frame
iDFS using STEEP criteria, as assessed by Investigator

Secondary

MeasureTime frame
RFS using STEEP criteria, DDFS using STEEP criteria, OS defined as time from date of randomization to date of death due to any cause, Change from baseline in the physical functioning sub-scale score and global health status/ QoL scale score as assessed by EORTC QLQ-C30, Frequency and severity of AEs, laboratory and Electrocardiogram (ECG) abnormalities, PK parameters such as Ctrough and other applicable parameters for ribociclib

Countries

Austria, Belgium, France, Germany, Hungary, Ireland, Italy, Poland, Romania, Spain

Outcome results

None listed

Source: EU CTIS · Data processed: Feb 4, 2026