Abstract: We identified one new trial for inclusion in this update. In total, the evidence for this review rests on three studies with a total of 207 participants. We found no evidence for an effect of dance/movement therapy on depression (standardized mean difference (SMD) = 0.02, 95% confidence interval (CI) -0.28 to 0.32, P = 0.89, I2 = 0%) (two studies, N = 170), stress (SMD = -0.18, 95% CI -0.48 to 0.12, P = 0.24, I2 = 0%) (two studies, N = 170), anxiety (SMD = 0.21, 95% CI -0.09 to 0.51 P = 0.18, I2 = 0%) (two studies, N = 170), fatigue (SMD = -0.36, 95% -1.26 to 0.55, P = 0.44, I² = 80%) (two studies, N = 170) and body image (SMD = -0.13, 95% CI -0.61 to 0.34, P = 0.58, I2 = 0%) (two studies, N = 68) in women with breast cancer. The data of one study with moderate risk of bias suggested that dance/movement therapy had a large beneficial effect on 37 participants' quality of life (QoL) (SMD = 0.89, 95% CI 0.21 to 1.57). One study with a high risk of bias reported greater improvements in vigor and greater reduction in somatization in the dance/movement therapy group compared to a standard care control group (N = 31). The individual studies did not find support for an effect of dance/movement therapy on mood, mental health, and pain. It is unclear whether this was due to ineffectiveness of the treatment, inappropriate outcome measures or limited power of the trials. Finally, the results of one study did not find evidence for an effect of dance/movement therapy on shoulder range of motion (ROM) or arm circumference in 37 women who underwent a lumpectomy or breast surgery. However, this was likely due to large within-group variability for shoulder ROM and a limited number of participants with lymphedema. Two studies presented moderate risk of bias and one study high risk of bias. Therefore, overall, the quality of the evidence is very low. We did not find support for an effect of dance/movement therapy on depression, stress, anxiety, fatigue and body image . The findings of individual studies suggest that dance/movement therapy may have a beneficial effect on QoL, somatization, and vigor. However, the limited number of studies prevents us from drawing conclusions concerning the effects of dance/movement therapy on psychological and physical outcomes in cancer patients.

Plain-language summary: We identified one new study for this update. The three studies included a a total of 207 participants, which were women with breast cancer. The studies were small in size. We found no evidence of an effect for depression, stress, anxiety, fatigue, and body image. The findings of individual studies suggest that dance/movement therapy may have a beneficial effect on the quality of life, somatization (i.e. distress arising from perceptions of bodily dysfunction) and vigor of women with breast cancer. No adverse effects of dance/movement therapy interventions were reported. The evidence is based on only three small studies and the quality of the evidence is not strong. No conclusions could be drawn regarding the effect of dance/movement therapy on psychological and physical outcomes in cancer patients because of an insufficient number of studies. More research is needed. We did not identify any conflicts of interests in the included studies.