Skip Ribbon Commands
Skip to main content

Clin Asst Prof Looi Wen Shen

Clin Asst Prof Looi Wen Shen

MBBS, FRCR (Clinical Oncology), FAMS


National Cancer Centre Singapore

Specialty: Radiation Oncology

Sub-specialties: Sarcoma/Skin, Uro-Oncology, Paediatric Haematology/Oncology, Lymphoma

Conditions Treated by this Doctor:
Lymphoma, Paediatric Cancer, Sarcoma, Skin Cancer, Urological Cancers, Uro-Oncology.

Clinical Appointments

  • Consultant Division of Radiation Oncology National Cancer Centre SingaporeNational Cancer Centre Singapore
  • Visiting Consultant Paediatric Brain and Solid Tumour Programme KK Women's and Children's HospitalKK Women's and Children's Hospital

Academic Appointments

  • Clinical Assistant Prof at Duke-NUS Medical School
  • Singapore Institute of Technology
  • Lee Kong Chian School of Medicine


Dr Looi Wen Shen is a Consultant radiation oncologist in the Department of Radiation Oncology at the National Cancer Centre, Singapore, and a Clinical Assistant Professor in Duke-NUS medical school. He is fellowship-trained, having completed a year-long fellowship in paediatric and adult proton therapy at the University of Florida Health Proton Therapy Institute. He specialises in caring for both adults and children, and has an interest in paediatric tumours, urologic tumours, sarcomas, and lymphomas.

After receiving his undergraduate medical degree from Yong Loo Lin School of Medicine, National University of Singapore, Dr Looi went on to complete his residency training in National Cancer Centre, Singapore before receiving specialist accreditation in radiation oncology by the Specialist Accreditation Board. He is an active cancer researcher and his research has been published in respected journals such as the International Journal of Radiation Oncology Biology and Physics, and Medical Physics, Paediatric Blood and Cancer, and the Archives of Disease in Childhood. Through his research, he endeavours to decrease the acute and late side effects of radiation in children and adults, and improve their quality of life.



  • 2020 – 2021 - Postdoctoral Fellowship

    Paediatric and Adult Proton Fellowship University of Florida Health Proton Therapy Institute

  • 2017 - Postgraduate Diploma

    Fellow of the Royal College of Radiology (UK) Clinical Oncology

  • 2013 – 2017 - Residency – Radiation Oncology

    National Cancer Centre, Singapore

  • 2003 – 2008 - Bachelor of Medicine, Bachelor of Surgery (M.B.B.S.)

    Yong Loo Lin, School of Medicine, National University of Singapore

Professional Appointments and Committee Memberships

  • 2021                 Clinical Assistant Professor, Duke-NUS
  • 2021                 Clinical Instructor, Lee Kong Chian, School of Medicine
  • 2020 – 2021     Postdoctoral Fellow, University of Florida, Proton Therapy Institute

  • 2019 – current  Visiting Consultant, Hematology/Oncology Service, KKH, Singapore.

  • 2019 – 2021     Clinical Instructor at Duke-NUS Medical School

  • 2017 – current  Consultant, Radiation Oncology, National Cancer Centre, Singapore



  • 2018 – 2019      Singapore Radiological Society, Executive Committee Member
  • 2017 – current  Royal College of Radiology (Clinical Oncology), Fellow (FRCR)
  • 2017 – current  Academy of Medicine, Fellow (FAMS)
  • 2008 – 2014      Singapore Medical Association, Member
  • 2021                  Children's Oncology Group, International Associate Member
  • 2021                  VIVA Asia Brain and Solid Tumour Working Group Member
  • 2019 – current  Paediatric Radiation Oncology Society, Member
  • 2020 – current  American Society for Radiation Oncology


  • Health Manpower Development Program (HMDP) award 2019
  • SAF resuscitation distinction award 2016

Research Interests


  1. Looi WS, Indelicato DJ, Rutenberg MS. The Role of Radiation Therapy for Symptomatic Desmoid Tumors. Curr Treat Options Oncol. 2021 Mar 1;22(4):34. doi: 10.1007/s11864-021-00831-6. PMID: 33649873.
  2. Bte Syed Sulaiman, N.; Kuick, C.H.; Chang, K.T.E.; Wan, K.R.; Looi, W.S.; Low, D.C.Y.; Seow, W.T.; Low, S.Y.Y. Cytokines in Pediatric Pilocytic Astrocytomas: A Clinico-Pathological Study. NeuroSci 2021, 2, 95-108.
  3. Indelicato DJ, Bates JE, Mailhot Vega RB, Rotondo RL, Hoppe BS, Morris CG, Looi WS, Sandler ES, Aldana PR, Bradley JA. Second tumor risk in children treated with proton therapy. Pediatr Blood Cancer. 2021 Feb 9:e28941. doi: 10.1002/pbc.28941. Epub ahead of print. PMID: 33565257.
  4. Indelicato DJ, Rotondo RL, Mailhot Vega RB, Holtzman AL, Looi WS, Morris CG, Sandler ES, Aldana PR, Bradley JA. Local Control After Proton Therapy for Pediatric Chordoma. Int J Radiat Oncol Biol Phys. 2020 Nov 27:S0360-3016(20)34591-0. doi: 10.1016/j.ijrobp.2020.11.051. Epub ahead of print. PMID: 33253819.
  5. Looi WS, Indelicato DJ, Mailhot Vega RB, Morris CG, Sandler E, Aldana PR, Bradley JA. Outcomes following limited-volume proton therapy for multifocal spinal myxopapillary ependymoma. Pediatr Blood Cancer. 2021 Mar;68(3):e28820. doi: 10.1002/pbc.28820. Epub 2020 Nov 23. PMID: 33226179.
  6. Low SYY, Bte Syed Sulaiman N, Tan EEK, Ng LP, Kuick CH, Chang KTE, Tang PH, Wong RX, Looi WS, Low DCY, Seow WT. Cerebrospinal fluid cytokines in metastatic group 3 and 4 medulloblastoma. BMC Cancer. 2020 Jun 15;20(1):554. doi: 10.1186/s12885-020-07048-0. PMID: 32539808; PMCID: PMC7296667.
  7. Pang EPP, Knight K, Park SY, Lian W, Master Z, Baird M, Chan JWX, Wang MLC, Tan TWK, Chua MLK, Chua ET, Looi WS, Nei WL, Tuan JKL. Duration-dependent margins for prostate radiotherapy-a practical motion mitigation strategy. Strahlenther Onkol. 2020 Jul;196(7):657-663. doi: 10.1007/s00066-019-01558-y. Epub 2020 Jan 13. PMID: 31932995.
  8. Looi WS, Goh SH, Tan CJ, Yeoh KW, Seng MS. Adolescent with facial swelling. Arch Dis Child Educ Pract Ed. 2019 Oct 22:edpract-2019-317654. doi: 10.1136/archdischild-2019-317654. Epub ahead of print. PMID: 31641021.
  9. Looi WS, Low DCY, Low SYY, Goh SH. Neonatal orbital swelling due to intracranial teratoma. Arch Dis Child Fetal Neonatal Ed. 2019 Jul;104(4):F365

Research Trials