What do systematic reviews say?

Concomitant (concurrent) chemoradiotherapy vs chemoradiotherapy plus surgery

Chemoradiotherapy showed no clear difference in overall survival compared with chemoradiotherapy plus surgery (high certainty).

• Chemoradiotherapy versus chemoradiotherapy plus surgery for esophageal cancer 2017 · Cochrane Headline outcomes only
  HR 0.99 [0.79, 1.24]
  2 studies · 431 participants
  High

Concomitant (concurrent) chemoradiotherapy vs radical surgery

• Type II or type III radical hysterectomy compared to chemoradiotherapy as a primary intervention for stage IB2… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  Very low

Extended‐field chemoradiotherapy vs pelvic chemoradiotherapy

It is very uncertain whether extended‐field chemoradiotherapy changes overall survival compared with pelvic chemoradiotherapy (very low certainty).

• Extended‐field radiotherapy for locally advanced cervical cancer 2018 · Cochrane Headline outcomes only
  HR 0.37 [0.14, 0.96]
  1 study · 74 participants
  Very low

Concomitant (concurrent) chemoradiotherapy vs Radiotherapy alone

Concomitant (concurrent) chemoradiotherapy probably leads to lower overall survival, concurrent chemoradiotherapy vs radiotherapy alone… compared with radiotherapy alone (non-resectable tumours) (moderate certainty).

• Interventions for the treatment of oral cavity and oropharyngeal cancer: chemotherapy 2021 · Cochrane All outcomes
  HR 0.74 [0.67, 0.83]
  24 studies · 2852 participants
  Moderate

Hysterectomy (simple or radical) with chemoradiotherapy vs chemoradiotherapy alone

It is very uncertain whether hysterectomy (simple or radical) with chemoradiotherapy changes overall survival Median compared with chemoradiotherapy alone (very low certainty).

• Hysterectomy with radiotherapy or chemotherapy or both for women with locally advanced cervical cancer 2022 · Cochrane Headline outcomes only
  no estimate extracted
  1 study · 102 participants
  Very low

Hysterectomy (simple or radical) with chemoradiotherapy vs internal radiotherapy (brachytherapy) with chemoradiotherapy

Hysterectomy (simple or radical) with chemoradiotherapy showed no clear difference in overall survival Median compared with internal radiotherapy (brachytherapy) with chemoradiotherapy (low certainty).

• Hysterectomy with radiotherapy or chemotherapy or both for women with locally advanced cervical cancer 2022 · Cochrane Headline outcomes only
  HR 0.65 [0.35, 1.21]
  1 study · 211 participants
  Low

EGFR monoclonal antibody (cetuximab or nimotuzumab) plus standard therapy (radiotherapy or chemoradiotherapy) vs Standard therapy alone (radiotherapy or chemoradiotherapy)

EGFR monoclonal antibody (cetuximab or nimotuzumab) plus standard… probably leads to lower overall survival compared with standard therapy alone (radiotherapy or chemoradiotherapy) (moderate certainty).

• Interventions for the treatment of oral and oropharyngeal cancers: targeted therapy and immunotherapy 2015 · Cochrane All outcomes

  24 to 70 months
  HR 0.82 [0.69, 0.97]
  3 studies · 1421 participants
  Moderate

Tyrosine kinase inhibitor (erlotinib, gefitinib or lapatinib) plus standard therapy (radiotherapy or chemoradiotherapy) vs Standard therapy alone (radiotherapy or chemoradiotherapy)

It is very uncertain whether tyrosine kinase inhibitor (erlotinib, gefitinib or lapatinib) plus… changes overall survival compared with standard therapy alone (radiotherapy or chemoradiotherapy) (very low certainty).

• Interventions for the treatment of oral and oropharyngeal cancers: targeted therapy and immunotherapy 2015 · Cochrane All outcomes

  40 to 60 months
  HR 0.99 [0.62, 1.57]
  2 studies · 271 participants
  Very low