Record ID: MS-N062 · Family: Acupuncture / symptom support · Clinical question: In cancer survivors with chronic musculoskeletal pain, do electroacupuncture or auricular acupuncture improve pain?
Evidence label: Positive pragmatic trial; electroacupuncture outperformed usual care, while auricular acupuncture did not meet noninferiority to electroacupuncture.
Evidence at a glance
- Benefit: Both procedures reduced average pain more than usual care over ten weeks.
- Certainty: Moderate for short-term pragmatic benefit; lower for durability and procedure-specific effects because there was no sham group.
- Risk: Adverse-event-related discontinuation was more frequent with auricular acupuncture.
- Cancer control: Not studied; participants had no evidence of active disease.
What was studied
The PEACE trial randomized 360 survivors with no evidence of disease and musculoskeletal pain for at least three months to electroacupuncture (145), auricular acupuncture (143) or usual care (72). Each acupuncture group received ten weekly sessions. The primary outcome was change in average pain severity; 340 participants completed the primary endpoint.
This is a broader survivor-pain question than acupuncture for aromatase-inhibitor joint pain, which has its own Evidence Explorer record.
What the results show
Compared with usual care, average pain reduction was 1.9 points (97.5% CI 1.4–2.4) greater with electroacupuncture and 1.6 points (1.0–2.1) greater with auricular acupuncture (both P<.001). Auricular acupuncture did not meet the prespecified criterion for noninferiority to electroacupuncture.
Adverse-event-related discontinuation occurred in 10.5% of the auricular group and 0.7% of the electroacupuncture group. The publication reports author disclosures; readers should consult the paper for full conflict details.
Limits and uncertainty
The unblinded, pragmatic design compares complete care strategies rather than isolating a needle-specific effect. The usual-care group was smaller. Results may not apply to active cancer, metastatic bone pain, acute postoperative pain or pain from an untreated structural problem. A roughly 1.6–1.9-point average advantage can be meaningful for some people but does not guarantee individual benefit.
Safety and practical context
Pain in a cancer survivor should be assessed before a complementary procedure, particularly if it is new, focal, progressive, nocturnal or associated with weakness, numbness, fever or weight loss. Avoid needling near infection, unstable bone lesions, recent surgery, compromised skin or areas of altered sensation. Discuss blood counts, anticoagulants, implanted electrical devices and lymphedema precautions.
Questions for the care team
- Has the cause of pain been established and have red flags been excluded?
- Is electroacupuncture appropriate with any implanted device or cardiac history?
- Could exercise rehabilitation, medication, injections or other treatments address the underlying problem?
Sources checked
- PEACE randomized clinical trial (PMID 33734288; PMCID PMC7974834)
- Trial registration NCT02979574
- Journal report and DOI
Last literature search: October 18, 2026 · Record appraisal: October 18, 2026
Educational evidence summary, not personal medical advice. This record concerns symptom or supportive care. It does not establish tumor shrinkage, recurrence prevention or longer survival, and it should not delay or replace oncology treatment.
