IOB, oncology leaders

We make every effort to achieve excellence in every detail of the patient’s oncological care through research, the latest advances in diagnostics and in prevention, as well as personalized treatment and follow-up.

All with the common team goal to offer the best response to the emotional needs of each patient and their family.



We are a leading research center. Thanks to our complete clinical trials program, patients are able to receive the most advanced treatments.

At IOB, we offer our patients the possibility to benefit from precision oncology through various genomic platforms adapted to the needs of each case . These platforms do not only allow us to search for tumor type genetic alterations, but also provide us with the ability to make a personalized therapeutic recommendation with the greatest probability of success, enabling us to offer the patient the more suitable treatment for their pathology, based on their genetic, clinical and molecular profile.

This makes it possible to use more efficient and safer drugs, matching them to patients based on the presence or lack thereof of certain biomarkers. That way we can incorporate those treatments that patients have a greater probability of responding to, using highly selective medications and creating a personalized individual treatment.

Medical specialties

Choose a specialty for more information.

We are by your side

Facing a cancer diagnosis is not easy. It is an unexpected life change that physically and emotionally affects the patient and their family.
Our team knows the impact that a cancer diagnosis causes and is ready to be able to answer most of your questions, analyze your case personally and refer you to the most suitable specialist.
Based on the experiences of our patients, we believe that knowing what you will encounter at each step helps you to be calmer and better face what is coming.
We will walk this “path” together and we will explain how IOB works and how we can help.

Our team

Dr. Aleix Prat

IOB Head of Breast cáncer

Dr. Aleix Prat is a nationally and internationally recognized breast cancer specialist who is the Head of the Breast Cancer Unit of the IOB and focuses his interest on the diagnosis and treatment of breast cancer and intrinsic breast cancer subtypes.

Dr. Prat is currently Head of the Medical Oncology Service at the Hospital Clínic de Barcelona, ​​President of the SOLTI Academic Group, Head of the Translational Genomics and Targeted Therapies Laboratory of IDIBAPS and Associate Professor at the University of Barcelona.

Our Centers

The IOB offers its cancer treatment services in four health centers, distributed between Madrid and Barcelona.

Plaza Alfonso Comín, 5
08023 Barcelona
T. +34 93 238 16 61
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Quironsalud El Pilar

Balmes 271
08006 Barcelona
T. +34 93 236 05 00
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Centro Médico Teknon

Carrer de Vilana, 12
08022 Barcelona
T. +34 93 290 64 71
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Ruber Internacional

La Masó, 38
28034 Mirasierra – Madrid
T. +34 91 387 50 90
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Ruber Juan Bravo

Juan Bravo 39 y 49
28006 Madrid
T. +34 91 298 62 50
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