You are here

SIOG Geriatricians ad-hoc Committee

The SIOG Geriatricians ad-hoc committee is an international network of geriatricians who are active in geriatric oncology.

The aim of the task force is:

  • To form a support group for geriatricians starting out in geriatric oncology or who have a limited support network in their local/national community, through regular meetings and the possibility of mentorship/buddy system
  • To develop a pool of geriatric experts for
    o SIOG (-related) conferences including the Advanced Courses
    o Cancer specialists seeking geriatric/geriatric oncology expertise
    o Reviewers for the Journal of Geriatric Oncology
  • To discuss study ideas and find collaboration partners for research and clinical projects

 The task force has links with the European Geriatric Medicine Society’s special interest group for Geriatric Oncology.

  •  Open invitation to all geriatricians:
    o Who are a SIOG member
    o Who have attended a SIOG conference in 2018 or 2019
    o Who have attend the SIOG advanced course
  • Digital meetings every two months
  • Face-to-face meeting at SIOG conference

 Currently the committee has 28 members from Europe, North America, South America, Asia, and Oceania.

SIOG Geriatricians ad-hoc Committee Profiles


Siri Rostoft (Norway)Marije Hamaker (Netherlands)
Oslo University Hospital, Oslo, Norway
Siri Rostoft is a medical doctor at Oslo University Hospital, Norway, specialized in internal medicine and geriatric medicine. She completed her PhD about geriatric assessment in older surgical cancer patients in 2011. Her main research interests in geriatric oncology are the clinical importance of geriatric assessment and interventions and frailty. She is a deputy editor for Journal of Geriatric Oncology.
Department of Geriatric Medicine, Diakonessenhuis, Utrecht, Netherlands
Marije Hamaker has been working as a clinical geriatrician working at the Diakonessenhuis in Utrecht, the Netherlands since 2010. In 2012, she defended her PhD thesis on “Decision making in geriatric oncology”. She has remained active in geriatric oncology research, focussing on treatment decisions and patient-centred outcome measures in various cancer types, and additionally has set up a project regarding geriatric nephrology in 2014. She is an active member of the Dutch Geriatric Oncology Foundation and the International Society of Geriatric Oncology.