Dr. Abhinav Dewan

DrNB (Medical Oncology), European Certified Medical Oncologist (ESMO)

Consultant- Medical Oncology

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Rajiv Gandhi Cancer Institute, Delhi, India

About

Dr. Abhinav Dewan is a dedicated and accomplished Medical Oncologist with a strong passion for advancing cancer care, treatment, and research. He holds the prestigious DrNB in Medical Oncology from Rajiv Gandhi Cancer Institute & Research Centre and has extensive experience in managing a wide range of cancers, including solid tumors, gastrointestinal oncology, pediatric oncology, and adult hemato-oncology. He possesses strong expertise in administering all types of chemotherapy, targeted therapies, immunotherapies, and hormone therapies. Dr. Dewan has been actively involved in national and international presentations, hosted conferences, and participated in patient support group meetings, reflecting his commitment to both academic and clinical excellence. His numerous publications and research contributions span various aspects of cancer treatment efficacy and molecular subtyping. He has also successfully cleared the European Certified Medical Oncologist examination conducted by European Society for Medical Oncology. As a member of esteemed organizations such as European Society for Medical Oncology, AROI, and ISMPO, he remains actively engaged in the latest advancements in oncology. His core ethos centers on delivering compassionate, patient-centric care, supported by his active participation in cutting-edge clinical trials and his deep commitment to improving patient outcomes.

Specialized Areas

Thoracic Medical Oncology
Soft Tissue and Bone Sarcomas
Breast and other solid tumors including gastro- intestinal cancer, Gynecological and urological malignancies
Precision Targeted Therapies and Personalized Approach

Immunotherapy advancements
Cancer screening and prevention

Educational Background

European Certified Medical Oncologist (European Society of Medical Oncology)
DrNB Medical Oncology (Rajiv Gandhi Cancer Institute and Research Centre, New Delhi) (National Board of Examination, New Delhi, India) – (14^th Dec 2020 – 13^th Dec 2023)
DNB Radiation Oncology (Rajiv Gandhi Cancer Institute and Research Centre, New Delhi) (National Board of Examination, New Delhi, India) – (10^th Feb 2010-9^th Feb 2013)
MBBS (Manipal College of Medical Sciences)

Experience

Consultant (Medical Oncology), RGCIRC, Delhi: 2024 –till date
Attending Consultant, Medical Oncology, RGCIRC, Delhi: 2023 – 2024
Consultant, Radiation Oncology, RGCIRC, Delhi: 2018 – 2020
Attending Consultant, Radiation Oncology, RGCIRC, Delhi: 2016 – 2018
Sr. Residency, Radiation Oncology, RGCIRC, Delhi: 2013 – 2016

Professional Journey

Achievements

Won 3^rd Price at ISMPO-ISO Conference at Chennai, India on 28.10.2022-30.10.2022 (Molecular Kaleidoscope of EGFR mutant NSCLC: A Need to be as precise as possible – Oral presentation).

Worked as Principal Investigator (PI) and Co-PI in various Clinical Trials.
Coordinated and engaged in various symposiums, webinars, and meetings.
Authored chapters on “Adjuvant therapy in Oral Cavity Cancer”, “Surgical Management of Head and Neck Cancers” and “Guidelines in Oral Cavity Cancer Management.”
Presented both oral and poster sessions in several national oncology conferences.
Participated as a speaker at various national oncological conferences.

Awards

Awarded ‘Best DNB Resident award in Radiation Oncology (2013)’ at 16^th Foundation day of Rajiv Gandhi Cancer Institute and Research Centre on 19^th October’ 2012.
Awarded First prize at 17^th Foundation day of Rajiv Gandhi Cancer Institute and Research Centre on 19^th October’2013 for excellence in sports (Cricket).
Received Award for Most Quality Conscious doctor on occasion of Doctors day at Hotel Crown Plaza on 30^th June’2015.
Awarded Chairman’s Appreciation Award at 20^th Foundation day of Rajiv Gandhi Cancer Institute & Research Centre held on 24^th September’2016.

Research Contribution

Conducted thesis work during DrNB Radiation Oncology (2010-2012), focusing on a prospective study titled “A Comparative dosimeteric and volumetric analysis by delivery of adaptive radiotherapy in locally advanced head and neck cancer.”
Conducted thesis work during DrNB Medical Oncology (2020-2023), focusing on a prospective study titled “Study of Clinical Efficacy and Toxicity Profile of Gemcitabine and Cisplatin Combination Chemotherapy in Patients with Metastatic Gall Bladder Cancer”

Publications

Oral tuberculosis following successful treatment of oral malignancy [Bagga Preeti, Dewan Abhinav, Aggarwal Pankaj, Garg Charu, Datta. R.Niloy] [J Cancer Res Ther. 2012 Oct-Dec;8(4):650-1] [doi: 10.4103/0973-1482.106590]
Squamous cell carcinoma of the Superior Gingivobuccal sulcus: An 11 year Institutional experience of 203 cases [Dewan Ajay Kumar, Dabas Surender, Pradhan Tapaswini, Mehta Sandeep, Dewan Abhinav, Sinha Rupal] [Jpn J Clin Oncol 2014;44(9)807– 811] [doi:10.1093/jjco/hyu088]
Primary Gastric Burkitt’s lymphoma – Case Report and Literature review [Mitra Swarupa, Gupta Sunil, Mehta Anurag, Louis Robert, Sharma Manoj, Saxena Upasana, David Simson, Dewan Abhinav] [Rare Tumors 2014; Nov 10;6(4):5300. doi: 10.4081/rt.2014.5300. eCollection 2014 Oct 27]
Is Volumetric Modulated Arc Therapy (Rapid Arc) better than IMRT for Gynecological Malignancies – A dosimetric Comparison [Manoj Kr Sharma, Swarupa Mitra, Upasana Saxena, Maninder Mishra, Himanshu Srivastava, Abhinav Dewan, Deepika Chauhan] [J Can Res Ther [2014 Oct-Dec;10(4):883-8. doi: 10.4103/0973-1482.138208.]
Role of levonorgestrel releasing intra-uterine system in the treatment of menorrhagia due to dysfunctional uterine bleeding and fibroid uterus [Reena Gupta, Rupali Dewan, Pratima Mittal, Jyotsna Suri, Abhinav Dewan, Rekha Bharti] [Int J Reprod Contracept Obstet Gynecol. 2014 Sep;3(3):671-677] [DOI: 10.5455/2320-1770.ijrcog20140960]
Transoral Robotic Surgery in Management of Oropharyngeal Cancers: A Preliminary Experience at a Tertiary Cancer Centre in India [Surender Dabas, Abhinav Dewan, Reetesh Ranjan, Ajay Kumar Dewan, Swati H Shah, Rupal Sinha] [Int J Clin Oncol] [DOI 10.1007/s10147-014-0774-3].
Adenoid cystic carcinoma of trachea: A Case report and literature review – Dewan Abhinav, Dewan A.K., Sharma Surender, Kakria Anjali, Sharma Anila, Dabas Surender [Sch J Med Case Rep 2015; Feb; 3(2):127-129]
Improving the accuracy of target volume delineation by combined use of computed tomography, magnetic resonance imaging and positron emission tomography in head and neck carcinomas [Chauhan D, Rawat S, Sharma MK, Ahlawat P, Pal M, Gupta G, Dewan A, Gupta M, Sharma S, Dodagoudar C, Pahuja A, Mitra S, Sharma SK] (J Can Res Ther 2015;11:746-51)
Salvage Transoral robotic surgery for Recurrent or Residual head and Neck squamous cell carcinoma [Surender Dabas, Abhinav Dewan, Reetesh Ranjan, Ajay Kumar Dewan, Rupal Sinha] [Asian Pac J Cancer Prev, 2015; 16 (17), 7627-7632]
Breast Cancer………Listen to your body. Be aware! [Rupali Dewan, Krati Mehrotra, Abhinav Dewan, Kanika Batra] [AOGD Bulletin, Volume 15, Issue 6, October 2015]
Advances in Surgical Management of Gynaecologic Cancers [Rupali Dewan, Abhinav Dewan, Kanika Batra] [AOGD Bulletin, Volume 15, Issue 8, December 2015]
Impact of Adaptive Radiotherapy on Locally Advanced Head and Neck Cancer – A Dosimetric and Volumetric Study [Abhinav Dewan , SK Sharma , AK. Dewan , Himanshu Srivastava , Sheh Rawat , Anjali Kakria, Maninder Mishra , Suresh T , Krati Mehrotra] [Asian Pac J Cancer Prev, 17 (3), 985-992]
Non-visualisation of strings after postplacental insertion of Copper-T 380A intrauterine device [Rupali Dewan, Abhinav Dewan, Sunita Singal, Rekha Bharti, Mansi Kaim] [J Fam Plann Reprod Health Care. 2016 May 20. pii: jfprhc-2015-101200. doi: 10.1136/jfprhc-2015-101200. [Epub ahead of print] PMID:27207850
Impact on Radiological and Pathological Response with Neoadjuvant Chemoradiation and its effect on Survival in Squamous Cell Carcinoma of Thoracic Esophagus (September’ 2016) [Dewan, A., Sharma, S., Dewan, A. et al. J Gastrointest Canc (2016). doi:10.1007/s12029-016-9870-0]
Dosimetric Influence of Photon Beam Energy and Number of Arcs on volumetric modulated arc therapy in Carcinoma Cervix: A Planning Study Reports of Practical Oncology and Radiotherapy [Girigesh Yadav, Manindra Bhushan, Abhinav Dewan, Upasna Saxena, Lalit Kumar, Deepika Chauhan, Kothanda Raman, Swarupa Mitra, Mahammood Suhail] [Reports of practical oncology and radiotherapy 22 (2017) 1–9 [http://dx.doi.org/10.1016/j.rpor.2016.09.002)
Male Breast Cancer: An 8-year Experience in a Single Tertiary Oncology Center in India [Himanshu Srivastava, Surender Kumar Sharma, Abhinav Dewan, Preety Negi, Parveen Ahlawat] [International Journal of Medical Pediatrics and Oncology, July-September, 2016:2(3):96-101
Treatment Planning With Unflattened as Compared to Flattened Beams for Bilateral Carcinoma of the Breast [Suresh Tamilarasu, Madeswaran Saminathan, SK Sharma, Anjali P, Abhinav Dewan] [Asian Pac J Cancer Prev. 2017 May 1;18(5):1377-1381] PMID: 28612590 DOI: 10.22034/APJCP.2017.18.5.1377
Diagnostic Performance of Serum Human Epididymis Protein 4 in Endometrial Carcinoma: A Pilot Study [Dewan R, Dewan A, Hare S, Bhardwaj M, Mehrotra K] [Journal of Clinical and Diagnostic Research. 2017 Jul, Vol-11(7): XC01-XC05]
Primary Cutaneous Amyloidosis: A Clinical, Histopathological and Immunofluorescence Study [Krati Mehrotra, Rupali Dewan, Jagannath Kumar V, Abhinav Dewan] [Journal of Clinical and Diagnostic Research. 2017 Aug, Vol-11(8): WC01-WC05]
Manoj K. Sharma, Eugen B. Hug, Manindra Bhushan, Dennis Mah, Dominic Maes, Munish Gairola, Surender K. Sharma, Girigesh Yadav, Manoj Pal, Deepika Chauhan, Abhinav Dewan, Inderjit Kaur, Sarthak Tandon, and Swarupa Mitra (2017). ‘Dosimetric Comparison of Pencil-Beam Scanning and Photon-Based Radiation Therapy as a Boost in Carcinoma of Cervix’ International Journal of Particle Therapy: Fall 2017, Vol. 4, No. 2, pp. 1-10. https://doi.org/10.14338/IJPT-17-00009
Dosimetric Analysis of Unflattened (FFFB) and Flattened (FB) Photon Beam Energy for Gastric Cancers Using IMRT and VMAT—a Comparative Study [Manindra Bhushan, Girigesh Yadav, Deepak Tripathi, Lalit Kumar, Vimal Kishore, Abhinav Dewan, Gourav Kumar, Inderjit Kaur Wahi, Munish Gairola] [J Gastrointest Cancer. 2018 Mar 8. doi: 10.1007/s12029-018-0080-9]
Srivastava H, Dewan A, Sharma SK, Negi P, Dewan AK, Pasricha S, et al. Adjuvant radiation therapy and temozolomide in Gliosarcoma: Is it enough? Case series of seven patients. Asian J Neurosurg 2018;13:297-301.
Dewan, Rupali & Bharti, Nivedita & Mittal, Aditi & Dewan, Abhinav. (2018). Early IUD insertion after medically induced abortion. The European Journal of Contraception & Reproductive Health Care. 1-6. 10.1080/13625187.2018.1473569.
K.R, Suhas, Bhakuni, Y.S., Ram, Dharma, Shukla, H, Ranjan, R, Dewan, A Dabas, S, Dewan, A.K. (2018). A gland of diverse pathology and unpredictable behaviour: our experience of primary submandibular gland malignancies. International Journal of Oral and Maxillofacial Surgery. 47. 10.1016/j.ijom.2018.05.012.
Simultaneous Integrated Boost by Intensity Modulated Radiotherapy (SIB-IMRT) in Patients undergoing Breast Conserving Surgery – A Clinical and Dosimetric Perspective [A. Dewan, K. S. Chufal, A. K. Dewan et al., Journal of the Egyptian National Cancer Institute, https://doi.org/10.1016/j.jnci.2018.10.001].
Diagnostic Performance of Serum Human Epididymis Protein 4 (HE4) for Prediction of Malignancy in Ovarian Masses. [Dewan R, Dewan A, Jindal M, et al.] [Asian Pac J Cancer Prev. 2019; 20 (4), 1103-1108].
Carcinosarcoma prostate with osteosarcomatous differentiation: A rare de novo presentation [BMJ Case Rep. 2019 Jun 12;12(6). pii: e230116. doi: 10.1136/bcr-2019-230116. PMID: 31196973] [Sumeet Aggarwal, M.D; Swarupa Mitra, MD; Abhinav Dewan, DNB; Ruparna Khurana, DNB; Garima Durga, DNB]
Effect of photon energy on conventional Intensity Modulated Radiotherapy and Rapid arc radiotherapy planning for deep-seated targets in Carcinoma Cervix [Manindra Bhushan, Girigesh Yadav, Deepak Tripathi, Lalit Kumar, Abhinav Dewan, Inderjit Kaur Wahi, Mahamood Suhail, Swarupa Mitra, Munish Gairola] [Asian Journal of Oncology] [July 2019] [doi: 10.1055/ s-0039-1693523].
Kumar, L., Kishore, V., Bhushan, M., Yadav, G., Dewan, A., Kumar, P., Kumar, G., Chowdhary, R. Impact of flatting filter free photon beam on Rapid Arc radiotherapy for Gynaecological malignancies: A comparative study. Iranian Journal of Medical Physics, 2020; (): -. doi: 10.22038/ijmp.2020.43068.1650.
Dewan A, Chufal KS, Tandon S, et al. A case report evaluating combined effect of intensity-modulated radiotherapy and deep inspiratory breath-hold for mediastinal lymphoma: A dosimetric analysis. Lung India. 2020;37(1):57–62. doi:10.4103/lungindia.lungindia_88_19.
Kumar L, Kishore V, Bhushan M, Dewan A, Yadav Girigesh, Raman K, eta l. Impact of Acuros XB (AXB) algorithm in deep-inspiration breathhold (DIBH) respiratory technique used for the treatment of left breast cancer. Reports of Practical Oncology and Radiotherapy. 2020;25(4):507-14. https://doi.org/10.1016/j.rpor.2020.04.011
Dutta, S., Dewan, A., Mitra, S. et al. Dosimetric impact of variable bladder filling on IMRT planning for locally advanced carcinoma cervix. J Egypt Natl Canc Inst 32, 31 (2020). https://doi.org/10.1186/s43046-020-00033-5.
Effect of Hip Prosthesis on Photon Beam Characteristics in the treatment of pelvic malignancies [Bhushan, M., Tripathi, D., Yadav, G., Kumar, L., Dewan, A., Kumar, G. Effect of Hip Prosthesis on Photon Beam Characteristics in Radiological Physics. Asian Pacific Journal of Cancer Prevention, 2020; 21(6): 1731-1738. doi: 10.31557/APJCP.2020.21.6.1731.
Dewan A, Dewan AK, Mitra S. Life of an Oncologist after COVID-19 Pandemic. Asian pacific Journal of Cancer Care. 2020; 5(1): 179-81. DOI: 31557/apjcc.2020.5.S1.179-181.
Dewan A, Mitra S, Aggarwal S, Barik S, Kaur I, Umesh P, Dewan R. Management of cervical cancer during the corona virus disease-19 (COVID-19) era. Br J Radiol. 2021 Jan 1;94(1117):20200686. doi: 10.1259/bjr.20200686. Epub 2020 Nov 20. PMID: 33216637.
Barik S, Mitra S, Suryavanshi M, Dewan A, Kaur I, Kumar D, Mishra M, Vishwakarma G. To study the role of pre-treatment microRNA (micro ribonucleic acid) expression as a predictor of response to chemoradiation in locally advanced carcinoma cervix. Cancer Rep (Hoboken). 2021 Aug;4(4):e1348. doi: 10.1002/cnr2.1348. Epub 2021 Mar 3. PMID: 33660436; PMCID: PMC8388174.
Kumar, L., Kishore, V., Bhushan, M., Yadav, G., Dewan, A., Kumar, P., Kumar, G., Chowdhary, R. Impact of Flattening Filter Free Photon Beam on Rapidarc Radiotherapy for Gynaecological Malignancies: A Comparative Study. Iranian Journal of Medical Physics, 2021; 18(1): 23-29. doi: 10.22038/ijmp.2020.43068.1650.
Manindra Bhushan, Deepak Tripathi, Girigesh Yadav, Lalit Kumar, Abhinav Dewan, Sarthak Tandon, Gourav Kumar, Inderjit Kaur Wahi, Munish Gairola. Effect of contrast medium on treatment modalities planned with different photon beam energies: a planning study. Rep Pract Oncol Radiother 2021;26(5):688-711.
Basu DA, Mukherjee A, Dewan A, Saha S. The process of unlearning. Cancer Res Stat Treat 2021;4:721-2.
Sharma M, Dewan A, Diwan H, Nathany S, Batra U. A Narrative review of ERBB2 in non-small cell lung carcinoma. Cancer Res Stat Treat 2022;5:97-104.
Dewan A, Mitra S. Mending the Rent: Knife Versus Rays Versus Syringe. Int J Radiat Oncol Biol Phys. 2022 Jul 15;113(4):714-715. doi: 10.1016/j.ijrobp.2021.03.010. PMID: 35772438.
Dewan A, Singh R, Sachdeva I, Bhurani D, Agrawal N, Ahmed R, et al. Tuberculosis and Hematological Malignancies: Real‑world experience and key insights into drug–drug interactions. J Clin Infect Dis Soc 2023;1:227-32.
Mitra S, Simson DK, Gehani M, Barik S, Khurana R, Singh S, Talwar V, Goel V, Khurana H, Mishra M, Dewan A, Mukhi MJ. Survival and Recurrence Patterns in Patients With Stomach Adenocarcinoma Receiving Chemotherapy or Chemoradiotherapy After D2 Gastrectomy in a Tertiary Care Cancer Institute: A Retrospective Real-World Evidence Cohort Study. Adv Radiat Oncol. 2023 Jun 2;8(6):101280. doi: 10.1016/j.adro.2023.101280. PMID: 38047217; PMCID: PMC10692297.
Dewan A, Kumar L, Chufal KS, Bhushan M, Ahmad I, Barik S, Umesh P, Mitra S, Mehrotra K. An Analysis of Predictors of Cardiac Sparing using Deep Inspiratory Breath Hold for Left Sided Breast Cancer Patients. Asian Pac J Cancer Prev. 2025 Feb 1;26(2):631-638. doi: 10.31557/APJCP.2025.26.2.631. PMID: 40022711.
Batra U, Singh AK, Nathany S, Dewan A, Sharma M, Amrith BP, Mehta A, Batra V, Noronha V, Prabhash K. Real world experience with MET inhibitors in MET exon 14 skipping mutated non-small cell lung cancer: largest Indian perspective. Discov Oncol. 2025 Mar 8;16(1):286. doi: 10.1007/s12672-025-01864-1. PMID: 40056282; PMCID: PMC11890481.
Ullas Batra, Sabeena K. Choudhary, Mansi Sharma, Shrinidhi Nathany, Abhinav Dewan, Medha Wadhwa, Kruti Gupta, Ritwika Choudhury, Rashi Sachdeva, Vanshika Batra, Sunil Pasricha, Kundan Chufal, L M Darlong. Turning the Tide for SCLC: Real World Analysis of Atezolizumab and Platinum-based Chemotherapy in Low-Resource Settings. 31 July 2025, PREPRINT (Version 1) available at Research Square [https://doi.org/10.21203/rs.3.rs-6997166/v1].
Sharma P, Mehta D, Dewan A, Nath A, Dewan A.K. Role of Hospice Care Centre in a Resource Constraint Area for the Care of Terminally Ill Cancer Patients. Asian Pac J Cancer Nursing. 2025 Aug: 77-82. DOI:10.31557/APJCN.1906.20250806.
Batra U, Sharma M, Miller AA, Chufal KS, Ahmad I, Dewan A, Chowdhary S, Amrith BP, Sachdeva R, Batra V, Umesh P, Bhatia K, Nathany S, Mehta A, Filho PN, Tolba K, Chico IM, Boixader LV, Cantini L, Saini KS. First-line pembrolizumab for metastatic NSCLC in lower-middle-income countries: bridging the efficacy-effectiveness gap. Immunotherapy. 2025 Aug;17(11):791-800. doi: 10.1080/1750743X.2025.2548754. Epub 2025 Sep 5. PMID: 40910565; PMCID: PMC12427484.
Batra U, Sharma M, Ahmad I, Rajappa S, Nathany S, Cantini L, Sachdeva R, Batra V, Choudhury R, Agarwal B, Dewan A, Choudhary S, Amrith BP, Darlong LM, Chufal KS, Umesh P, Bhatia K, Filho PN, Saini KS, Mehta A. A Decade of Treating ALK-Rearranged Non-Small Cell Lung Cancer in a Lower Middle-Income Country: Changing Patterns and Improving Survival. Oncol Ther. 2025 Oct 17. doi: 10.1007/s40487-025-00390-y. Epub ahead of print. PMID: 41107702.
Batra U, Sharma M, Nathany S, Sachdeva R, Batra V, Venkataraman P, Dewan A, Choudhary S, Mehta A. Circulating tumour DNA as a predictive biomarker for tumour response and prolonged clinical benefit with nivolumab in advanced non-small cell lung cancer. Lung India. 2025 Nov 1;42(6):520-525. doi: 10.4103/lungindia.lungindia_127_25. Epub 2025 Oct 24. PMID: 41129575.
Dewan, A., Talwar, V., Goel, V. et al.Clinical Efficacy and Safety of Gemcitabine–Cisplatin Combination in Metastatic Gallbladder Cancer: A Prospective Study from North India. J Gastrointest Canc 56, 233 (2025). https://doi.org/10.1007/s12029-025-01338-1.