The SIOP Europe office is led by the Chief Executive Officer who supports the Board and the General Assembly in pursuing the organisation’s mission.  The aim of the SIOP Europe office is to:

  • Facilitate the collaboration amongst European professionals in the field of paediatric oncology;
  • Define and implement the communication strategy;
  • Empower the Board, facilitating its relationship with key stakeholders and policy-makers in the European Union.

Since December 2018, the office is located at the Brussels Life Science Incubator (c/o BLSI, Clos Chapelle-aux-Champs 30, Bte 1.30.30 1200 Brussels, Belgium), which is also home to ESSO, EONS and CDDF.


Samira Essiaf

(BE) Chief Executive Officer

Olga Kozhaeva

(BE) Director, Policy Affairs

Anne Blondeel

(BE) Project & Education Coordinator

Andrea Demadonna

(IT) Project & Research Coordinator

Giorgia Manuzi

(IT) EU Projects Coordinator

Elena Torou

(GR) Grants & EU Projects Coordinator

Caroline Queiroz

(BR) Policy & Project Coordinator

Cristina Radu

(RO) Society Administrator

Stejsi Shehi

(AL) EU Projects and Working Groups Administrator

Ciara Sheehan

(IE) Policy Officer

Sonja Ladenstein

(AT) Policy Officer