What do systematic reviews say?

Intervention diet vs usual on‐treatment diet

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Conformal RT vs conventional dose RT

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  2 studies · 307 participants
  High

Summary of findings: Proteolytic enzymes vs placebo or control

Summary of findings: Proteolytic enzymes may leads to lower acute and late GI toxicity (grade 2+) compared with control (placebo or no intervention) (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 0.45 [0.24, 0.88]
  1 study · 120 participants
  Low

Glutamine vs placebo

Summary of findings: Glutamine showed no clear difference in acute and late GI toxicity (grade 2+) compared with placebo (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 2.4 [0.68, 8.53]
  1 study · 69 participants
  Low

Counselling vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Reduced dose volume vs standard dose volume

Summary of findings: Reduced dose volume showed no clear difference in acute and late GI toxicity (grade 2+) compared with standard dose volume (moderate certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 1.21 [0.81, 1.81]
  1 study · 211 participants
  Moderate

Summary of findings: Higher bladder volume vs lower bladder volume

Summary of findings: Higher bladder volume showed no clear difference in acute and late GI toxicity (grade 2+) compared with lower bladder volume (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 2.22 [0.62, 7.93]
  1 study · 110 participants
  Low

Summary of findings: Evening RT vs morning RT

Summary of findings: Evening RT may leads to lower acute and late GI toxicity (grade 2+) compared with morning RT (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 0.51 [0.34, 0.76]
  2 studies · 294 participants
  Low

Summary of findings: Hydrogel spacer vs no intervention

Summary of findings: Hydrogel spacer showed no clear difference in acute and late GI toxicity (grade 2+) compared with no intervention (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 0.51 [0.08, 3.38]
  2 studies · 289 participants
  Low

Summary of findings: Endorectal balloon vs no intervention

It is very uncertain whether summary of findings: Endorectal balloon changes acute and late GI toxicity (grade 2+) compared with no intervention (very low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 1 [0.41, 2.42]
  1 study · 48 participants
  Very low

Summary of findings: Aminosalicylates vs placebo

Summary of findings: Aminosalicylates probably leads to higher acute and late GI toxicity (grade 2+) compared with placebo (moderate certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 1.02 [1.22, 1.45]
  2 studies · 143 participants
  Moderate

Summary of findings: Sodium butyrate vs placebo

Summary of findings: Sodium butyrate showed no clear difference in acute and late GI toxicity (grade 2+) compared with placebo (moderate certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 0.91 [0.41, 1.98]
  1 study · 79 participants
  Moderate

Selenium vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Octreotide vs placebo

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Summary of findings: Protein supplements vs no intervention

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Probiotics vs placebo or control

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Sucralfate vs placebo

Summary of findings: Sucralfate showed no clear difference in acute and late GI toxicity (grade 2+) [acute = during RT; late = 6… compared with placebo (moderate certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 1.07 [0.83, 1.39]
  1 study · 335 participants
  Moderate

Summary of findings: IMRT vs 3DCRT

Summary of findings: IMRT may leads to lower acute and late GI toxicity Grade 2+ compared with 3DCRT (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 0.48 [0.26, 0.88]
  4 studies · 444 participants
  Low

Summary of findings: BT vs external beam radiotherapy (EBRT)

The review found no eligible studies for this question.

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  no estimate extracted
  Studies not reported
  No studies found

Superoxide dismutase (SOD) vs no intervention

Summary of findings: Superoxide dismutase may leads to lower acute and late GI toxicity (grade 2+) compared with no intervention (low certainty).

• Interventions to reduce acute and late adverse gastrointestinal effects of pelvic radiotherapy for primary pelvic… 2018 · Cochrane Headline outcomes only
  RR 0.2 [0.05, 0.86]
  1 study · 92 participants
  Low