Logo Image
|Videos|July 14, 2015

Efficacy of Onapristone in PR-Expressing Tumors

Alexander Zukiwski, MD, CEO, Arno Therapeutics, Inc., discusses the efficacy of onapristone (ONA) in progesterone receptor (PR)-expressing tumors.

ONA was previously evaluated in women with breast cancer, and it produced positive results. Zukiwski and his team reevaluated the drug in a phase I study, believing that they solved one of its major safety issues. They recently started a phase II study in women who have recurrent and metastatic endometrial cancer.

Alexander Zukiwski, MD, CEO, Arno Therapeutics, Inc., discusses the efficacy of onapristone (ONA) in progesterone receptor (PR)-expressing tumors.

Related Content

Latest CME

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Tennessee Oncology Practice Society
Video

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Tennessee Oncology Practice Society

Seth A. Wander, MD, PhD; Kamel Abou Hussein, MD

View more
Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – Washington
Video

Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – Washington

Alison K. Conlin, MD; Neil M. Iyengar, MD

View more
Updates from Chicago: Oral SERDs in HR+/HER2- Metastatic Breast Cancer – What the Latest Data Really Tell Us
Virtual Event

Updates from Chicago: Oral SERDs in HR+/HER2- Metastatic Breast Cancer – What the Latest Data Really Tell Us

June 8, 2026

View more
Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – Wyoming & Montana
Video

Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – Wyoming & Montana

Yan Ji, MD; Neil M. Iyengar, MD

View more
Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – North Carolina
Video

Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – North Carolina

Girish Kunapareddy, MD; Sara M. Tolaney, MD, MPH

View more
Iowa Oncology Society
Virtual Event

Iowa Oncology Society

2 Sessions are Available!

View more
Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Nevada Oncology Society
Video

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Nevada Oncology Society

Seth A. Wander, MD, PhD; Ruta D. Rao, MD

View more
Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | The Arizona Clinical Oncology Society
Video

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | The Arizona Clinical Oncology Society

Marla D. Lipsyc-Sharf, MD; Richard Zelkowitz, MD

View more
Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Missouri Oncology Society
Video

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Missouri Oncology Society

Seth A. Wander, MD, PhD; Kate Baxstrom, MD

View more
Kansas Society of Clinical Oncology
Virtual Event

Kansas Society of Clinical Oncology

1 Session is Available!

View more
Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Wisconsin Association of Hematology and Oncology
Video

Community Oncology Connections™: Beyond Primary End Points – Digging Into Randomized and Real-World Data to Guide Challenging Treatment Decisions in HR+/HER2− Metastatic Breast Cancer | Wisconsin Association of Hematology and Oncology

Seth A. Wander, MD, PhD; Yang Liu, MD

View more
Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – Rhode Island
Video

Community Oncology Connections™: Clarifying Novel Treatment Pathways in HER2+ Breast Cancer – Rhode Island

Yelda Nouri, MD; Sara Nunnery, MD, MSCI

View more
Louisiana Oncology Society
Virtual Event

Louisiana Oncology Society

2 Sessions are Available!

View more
Missouri Oncology Society
Virtual Event

Missouri Oncology Society

2 Sessions are Available!

View more
New Mexico Society of Clinical Oncology
Virtual Event

New Mexico Society of Clinical Oncology

2 Sessions are Available!

View more
25th Annual International Congress on the Future of Breast Cancer® East
In-Person + Virtual Event

25th Annual International Congress on the Future of Breast Cancer® East

July 10-11, 2026

View more
Medical Crossfire®: Integrating Next-Generation Endocrine Targeting Therapies to Improve Outcomes for Patients With HR+/HER2- Breast Cancer
Video

Medical Crossfire®: Integrating Next-Generation Endocrine Targeting Therapies to Improve Outcomes for Patients With HR+/HER2- Breast Cancer

William J. Gradishar, MD, FASCO, FACP; Laura Huppert, MD; Yuan Yuan, MD, PhD

View more
Breast Cancer Tumor Board®: Advancing Care in Metastatic Breast Cancer - The Evolving Role of Antibody-Drug Conjugates
Video

Breast Cancer Tumor Board®: Advancing Care in Metastatic Breast Cancer - The Evolving Role of Antibody-Drug Conjugates

Aditya Bardia, MD, MPH, FASCO; Joyce O’Shaughnessy, MD; Hope S. Rugo, MD; Paolo Tarantino, MD

View more
25th Annual International Congress on the Future of Breast Cancer® West
In-Person Event

25th Annual International Congress on the Future of Breast Cancer® West

July 17-18, 2026

Register now!
Wisconsin Association of Hematology and Oncology
Virtual Event

Wisconsin Association of Hematology and Oncology

1 Session is Available!

View more
Indiana Oncology Society
Virtual Event

Indiana Oncology Society

2 Sessions are Available!

View more
Rhode Island Oncology Society
Virtual Event

Rhode Island Oncology Society

3 Sessions are Available!

View more
Breast Cancer Tumor Board: Targeting TROP2 – Innovations in Triple-Negative Breast Cancer Treatment
Video

Breast Cancer Tumor Board: Targeting TROP2 – Innovations in Triple-Negative Breast Cancer Treatment

Joyce O’Shaughnessy, MD; Matthew P. Goetz, MD; Hope S. Rugo, MD, FASCO

View more
Breaking Down the Rationale for Targeting TROP2 in TNBC
Multimedia

Breaking Down the Rationale for Targeting TROP2 in TNBC

Filipa Lynce, MD; Rita Nanda, MD

View more
Evaluating the Latest Data and Ongoing Trials for Novel ADC Approaches in TNBC
Multimedia

Evaluating the Latest Data and Ongoing Trials for Novel ADC Approaches in TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD

View more
Expert Guidance on Frequently Asked Questions Regarding the Use of ADCs in TNBC
Multimedia

Expert Guidance on Frequently Asked Questions Regarding the Use of ADCs in TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD; Virginia Kaklamani, MD, DSc

View more
Establishing the Rationale for ADC and ICI Combinations in TNBC
Multimedia

Establishing the Rationale for ADC and ICI Combinations in TNBC

Virginia Kaklamani, MD, DSc; Tiffany A. Traina, MD, FASCO

View more
Dissecting Clinical Trial and Real-World Data for ADCs in TNBC
Multimedia

Dissecting Clinical Trial and Real-World Data for ADCs in TNBC

Filipa Lynce, MD; Rita Nanda, MD

View more
24th Annual International Congress on the Future of Breast Cancer® East
Video

24th Annual International Congress on the Future of Breast Cancer® East

Joyce O’Shaughnessy, MD

View more
Show Me the Data®: New and Emerging Roles for Oral SERD Therapy in the Treatment of ER+/HER2– Breast Cancer
Video

Show Me the Data®: New and Emerging Roles for Oral SERD Therapy in the Treatment of ER+/HER2– Breast Cancer

Ana C. Garrido-Castro, MD; Pedram Razavi, MD, PhD

View more
PER Resource Center: Integrating Novel Approaches in TNBC – New Avenues for TROP2-Targeting ADCs and Beyond – Nursing
Multimedia

PER Resource Center: Integrating Novel Approaches in TNBC – New Avenues for TROP2-Targeting ADCs and Beyond – Nursing

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD; Virginia Kaklamani, MD, DSc; Filipa Lynce, MD; Rita Nanda, MD; Tiffany A. Traina, MD, FASCO

View more
Expert Roundtable and Panel Discussions: Current and Future Landscape of TNBC
Multimedia

Expert Roundtable and Panel Discussions: Current and Future Landscape of TNBC

Aditya Bardia, MD, MPH, FASCO; Erika P. Hamilton, MD; Tiffany A. Traina, MD, FASCO

View more
(CME Track) Antibody–Drug Conjugates in Oncology: The Essentials of AE Management for Better Patient Outcomes
Video

(CME Track) Antibody–Drug Conjugates in Oncology: The Essentials of AE Management for Better Patient Outcomes

Michelle L. Taylor, ANP-BC; Emely Alfaro, DNP, RN, CNS, OCN; Paige Griffith, CRNP; Beth Sandy, MSN, CRNP, FAPO

View more
9th Annual School of Nursing Oncology™
Video

9th Annual School of Nursing Oncology™

Beth Faiman, PhD, MSN, APN-BC, BMTCN, AOCN, FAAN, FAPO; Beth Sandy, MSN, CRNP, FAPO; Lindsay Adkins, MSN, FNP-BC, BMTCN; Jeneth Aquino, DNP, FNP-BC; Casey Gormley, MSN, FNP-C, AOCNP; Heather J. Jackson, PhD, FNP-BC; Kelsey Martin, AG-ACNP-BC, AOCNP; Nerina T. McDonald, PA-C; Lauren Verity Moore, DNP, MSN, AGACNP-BC; Faith A. Mutale, DNP, CRNP; Tiffany Richards, PhD, ANP-BC, AOCNP; Emily Skotte, DNP, MSN, ACNP-BC; Leslie Smith, DNP, RN, APRN-CNS, AOCNS, BMTCN; Saneese Stephen, PA-C, MPAS; Sara M. Tinsley-Vance, PhD, APRN, AOCN

View more