A Phase II Randomized Study Evaluating the Biological and Clinical Effects of the Combination of Palbociclib With Letrozole as Neoadjuvant Therapy in Post-Menopausal Women With Estrogen-Receptor Positive Primary Breast Cancer

Allegheny General Hospital, Pittsburgh

University of Pittsburgh, Pittsburgh

Pinnacle Health Ortenzio Cancer Center, Mechanicsburg

Sentara Martha Jefferson Hospital-Phillips Family Cancer Center, Charlottesville

Virginia Commonwealth University, Richmond

West Virginia University, Morgantown

Hope Women's Cancer Centers, Asheville

University of Miami Hospital and Clinics - Sylvester Comprehensive Cancer Center, Miami

Norton Healthcare Pavillion, Louisville

Norton Cancer Institute - Suburban, Norton Medical Plaza II, Louisville

Norton Cancer Institute - Brownsboro Medical Plaza I, Louisville

Metro-Minnesota CCOP, Saint Louis Park

Cancer Care Specialists of Central Illinois, Decatur

Baylor College of Medicine, Houston

Joe Arrington Cancer Research and Treatment Center, Lubbock

Long Beach Memorial Medical Center-Todd Cancer Institute, Long Beach

Providence Oncology and Hematology Clinic, Portland

Swedish Cancer Institute, Seattle

Women and Infants Hospital of Rhode Island, Providence

Centre Hospitalier de l'Universite de Montreal, Montreal

Jewish General Hospital, Montreal

McGill University Health Center, Montreal

CHU de Quebec - Universite Laval, Québec

Milton Keynes Hospital, Milton Keynes

Hinchingbrooke Hospital, Huntingdon

Royal Cornwall Hospital, Treliske, Truro

Royal Devon and Exeter Hospital, Exeter

Royal Sussex County Hospital, Brighton

Southend Hospital, Westcliff-on-Sea

Darent Valley Hospital, Dartford

Maidstone Hospital, Maidstone

Royal Liverpool University Hospital, Liverpool

James Paget University Hospital, Great Yarmouth

Musgrove Park Hospital, Taunton

Weston General Hospital, Weston-super-Mare

The Royal Marsden Hospital, Sutton

Salisbury Hospital, Salisbury

Kidderminster Hospital, Kidderminster

Alexandra Hospital, Redditch

Worcestershire Royal Hospital, Worcester

Belfast City Hospital, Belfast

Royal Bournemouth Hospital, Bournemouth

Western General Hospital (Edinburgh Cancer Centre), Edinburgh

St James' University Hospital, Leeds

Barnet Hospital, London

Whittington Hospital, London

University College London Hospitals, London

The Royal Marsden Hospital, London

Charing Cross Hospital, London

Nottingham University Hospitals NHS Trust, City Campus, Nottingham

Derriford Hospital, Plymouth

Singleton Hospital, Swansea