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iwCLL
Image credit: Kerry Rogers MD

iwCLL is a global, non-profit community of leading physicians and scientists, committed to creating progress in the treatment and outcomes of patients with Chronic Lymphocytic Leukemia (CLL).

More about our work
  • Exterior photo of the congress centre in Krakow at dusk with the sun reflecting off the glass exterior.

    XXI iwCLL – Krakow, Poland

    We are proud to host our eleventh biennial International Workshop on CLL, bringing together around 1,400 CLL-specialist professionals from across the world. 12-15 September 2025, Krakow, Poland

    Krakow information
  • Exterior photo of the congress centre in Krakow at dusk with the sun reflecting off the glass exterior.

    XXI Biennial Meeting 2025 poster gallery

    Revisit the posters from the XXI Biennial Meeting 2025 in Krakow, Poland.

    Poster gallery

  • Current projects

    Find out more about iwCLL’s current projects to drive progress in the management, treatment and outcomes of CLL patients.

    Projects

Latest news

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iwCLL Guidelines

The iwCLL Guidelines are a key resource for CLL treatment practitioners around the world.

iwCLL guidelines