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lasofoxifene

Phase 3

Osteoporosis | Small molecule | Endocrine |Ligand Pharmaceuticals Incorporated|Trials Updated: Aug 15, 2011

lasofoxifene development status

Highest phase Phase 3
Registered trials 4 across 1 sponsor since Sep 2005

lasofoxifene target and mechanism

Molecular targetESR2, ESR1
Target classModulator
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedDouble-BlindPLACEBO_CONTROLLEDDMC
Total Trials4
Total Enrollment9,644

FDA Designations

No designations recorded

lasofoxifene clinical trials

lasofoxifene · 4 trials · 2 indications

Phase 3 2Phase 2 2
NCT00163137Comparison of Raloxifene and Lasofoxifene - A Randomized, Blinded Study of These Drugs and Placebo on Bone LossOsteoporosis
COMPLETED540 Analytics
NCT00141323Postmenopausal Evaluation and Risk-reduction With Lasofoxifene (PEARL)Osteoporosis
COMPLETED8,556 Analytics
PHASE3COMPLETED
Comparison of Raloxifene and Lasofoxifene - A Randomized, Blinded Study of These Drugs and Placebo on Bone Loss
OsteoporosisUnlock trial analytics
PHASE3COMPLETED
Postmenopausal Evaluation and Risk-reduction With Lasofoxifene (PEARL)
OsteoporosisUnlock trial analytics

Study Endpoints

Primary Endpoints

Spine BMD after 2 years
2 years

Lumbar Spine Bome Mineral Density

New morphometric vertebral fractures
3 years
New cases of breast cancer
5 years
New non-vertebral fractures
5 years
Change in bone mineral density of the lumbar spine.
2 years
Effects of lasofoxifene compared to placebo on Bone Mineral Density (BMD) changes at the spine and hip after 1 year of treatment
12 months

Percent change from baseline in lumbar spine BMD at Month 12

Secondary Endpoints

Hip BMD and LDL-C after 2 years, vaginal pH and Maturation Index after 1 year
Hip BMD= 24 months, LDL-C= 24 months, vaginal pH= 24 months, vaginal epithelial parabasel cells= 12 months
All clinical fractures, non-vertebral fractures, BMD, breast cancer, cardiovascular events, and gynecological safety events
3 years
All clinical fractures, new morphometric vertebral fractures, BMD, cardiovascular events, and gynecological safety events
5 years
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Study Design & Arms

AllocationRANDOMIZED
MaskingQUADRUPLE
ModelPARALLEL
PurposePREVENTION

Treatment Arms

ArmTypeDescription
Lasofoxifene 0.25 mgEXPERIMENTALlasofoxifene 0.25 mg/day
raloxifeneACTIVE_COMPARATORraloxifene 60 mg/day
PlaceboPLACEBO_COMPARATORPlacebo
lasofoxifene 0.5 mg/dayEXPERIMENTAL -
lasofoxifene 0.25 mg/dayEXPERIMENTAL -
Lasofoxifene 0.25 mg/dEXPERIMENTAL -
Lasofoxifene Dose 1EXPERIMENTAL0.05 mg
Lasofoxifene Dose 2EXPERIMENTAL0.25 mg
Lasofoxifene Dose 3EXPERIMENTAL0.5 mg

Interventions

NameTypeDescription
lasofoxifeneDRUGlasofoxifene 0.25mg
raloxifeneDRUGraloxifene 60 mg/day
PlaceboDRUG0 mg/day
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Eligibility Criteria

Age Range48 Years to 75 Years
SexFEMALE
Healthy VolunteersYes
Study Sites72

Inclusion Criteria: * Postmenopausal women with low bone density (osteopenia) and screening labs, pelvic ultrasound, mammogram without significant findings Exclusion Criteria: * Presence of metabolic bone disease, fractures, blood clots, or recent cancer. * Any use of selective estrogen receptor ...

Countries:United StatesArgentinaAustraliaBelgiumBrazilCanadaCosta RicaCroatiaDenmarkEgyptEstoniaFinlandFranceGermanyHong KongHungaryIndiaIrelandItalyJapanLithuaniaMexicoNorwayPolandRomaniaRussiaSouth AfricaSouth KoreaSpainSwedenTurkey (Türkiye)United KingdomTaiwan
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Competitive Landscape -Osteoporosis 10 trials

No competing companies are currently tracked in active development for Osteoporosis.
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Frequently asked questions about lasofoxifene

What is lasofoxifene used for?

Lasofoxifene is being studied for bone loss and osteoporosis, conditions of reduced bone mineral density. It is an investigational small molecule developed by Ligand Pharmaceuticals Incorporated, trading as LGND. The clinical program has focused on postmenopausal women, including trials in osteoporosis and bone loss across the United States, Europe, and Asia.

What does lasofoxifene target?

Lasofoxifene targets the estrogen receptors ESR2 and ESR1. It is classified as a modulator of these receptors, meaning it acts on estrogen receptor signaling rather than simply blocking or activating it uniformly. This receptor activity underlies its investigation in endocrine-related bone conditions such as osteoporosis and bone loss.

Who makes lasofoxifene?

Lasofoxifene is developed by Ligand Pharmaceuticals Incorporated, which trades under the ticker LGND. The company is the sponsor associated with the drug's clinical development program in bone loss and osteoporosis. Lasofoxifene is a small molecule in the endocrine therapeutic area.

What phase is lasofoxifene in?

Lasofoxifene is in Phase 2 development and is investigational. Its clinical program includes Phase 2 and Phase 3 studies, all of which are completed, with no active trials currently listed. It has been evaluated in randomized, double-blind, placebo-controlled trials in postmenopausal women with osteoporosis or bone loss.

What clinical trials is lasofoxifene in?

Completed lasofoxifene trials include NCT00674453, a Phase 2 bone loss study in the United Kingdom; NCT00163137, a Phase 3 comparison with raloxifene and placebo; NCT00143273, a Phase 2 dose-response study in Japanese and Asian postmenopausal women; and NCT00141323, the Phase 3 PEARL osteoporosis study. Total enrollment across these trials was 9,593 participants.

How many patients were enrolled in lasofoxifene trials?

Across the four listed lasofoxifene trials, total enrollment was 9,593 participants. The largest was the Phase 3 PEARL study, NCT00141323, with 8,556 postmenopausal women with osteoporosis. The other trials enrolled 51, 540, and 497 participants, and all four studies are completed.