There is quite a lot of research accumulating on the benefits of yoga for cancer survivors (including both in treatment and beyond).

Here is a sampling of current studies:

Agarwal RP, Maroko‑Afek A. Yoga into cancer care: A review of the evidence‑based
research. Int J Yoga 2018;11:3-29.

Bower et al (2005) Yoga for Cancer Patients and Survivors. Cancer Control July 2005, Vol 12 No 3.

Buffart et al (2012)  Physical and Psychosocial Benefits of Yoga in Cancer Patients and Survivors, a Systematic  Review and Meta-analysis of Randomized Controlled Trials. Biomed Central Cancer 2012, 12:559.

Colus-Reed et al ( 2012) Yoga & Cancer Interventions: A Review of the Clinical Significance of Patient Reported Outcomes for Cancer Survivors, Evidence-Based Complementary and Alternative Medicine, Volume 2012, Article ID 642576, 17 pages
doi:10.1155/2012/642576.

Deng et al (2022) Effects of Vigorous Versus Restorative Yoga Practice on Objective Cognition Functions in Sedentary Breast and Ovarian Cancer Survivors: A Randomized Controlled Pilot Trial. Integrative Cancer Therapies. Vol 21: 1-6.

Galantino ML, Tiger R, Brooks J, Jang S, Wilson K. (2019) Impact of Somatic Yoga and Meditation on Fall Risk, Function, and Quality of Life for Chemotherapy-Induced Peripheral Neuropathy Syndrome in Cancer Survivors. Integrative Cancer Therapies. 2019;18. doi:10.1177/1534735419850627

Galantino ML, Desai K, Greene L, DeMichele A, Stricker CT, Mao JJ. Impact of Yoga on Functional Outcomes in Breast Cancer Survivors With Aromatase Inhibitor–Associated Arthralgias. Integrative Cancer Therapies. 2012;11(4):313-320. doi:10.1177/1534735411413270

Lin et al (2019)  “Influence of Yoga on Cancer-Related Fatigue and on Mediational Relationships Between Changes in Sleep and Cancer-Related Fatigue: A Nationwide, Multicenter Randomized Controlled Trial of Yoga in Cancer Survivors." Integrative Cancer Therapies, Volume 18,  January-December 2019.

Vardar Yağlı N, Şener G, Arıkan H, et al. Do Yoga and Aerobic Exercise Training Have Impact on Functional Capacity, Fatigue, Peripheral Muscle Strength, and Quality of Life in Breast Cancer Survivors? Integrative Cancer Therapies. 2015;14(2):125-132. doi:10.1177/1534735414565699

Zhi et al (2021) Yoga for cancer survivors with chemotherapy-induced peripheral neuropathy: Health-related quality of life outcomes.  Cancer Medicine, 2021;10:5456–5465.