Table 1 Characteristics of included trials for meta-analysis.

From: Hypomagnesemia and clinical benefits of anti-EGFR monoclonal antibodies in wild-type KRAS metastatic colorectal cancer: a systematic review and meta-analysis

Author

Trial name

Type of study

Study design

Definition of hypomagnesemia

No. of Patients (Hypo-mg/ Normo-mg)

Fujii et al.26

N/A

Retrospective

Cetuximab or Panitumumab with mFOLFOX or FOLFIRI vs. mFOLFOX or FOLFIRI in the first-line treatment of mCRC

Grade 0 vs. grade 1–4 hypomagnesemia

14/29

Vincenzi et al.23

N/A

Retrospective

Cetuximab (400 mg/m2 loading dose, then 250 mg/m2 weekly) with irinotecan in the third-line treatment of mCRC

 > 50% vs. < 50% reduction compared with basal value within 1 months from treatment

95/48

Vickers et al.24

NCIC CTG/ AGITG CO. 17

RCT

Cetuximab (400 mg/m2 loading dose, then 250 mg/m2 weekly) with BSC vs. BSC alone in the third-line treatment of mCRC

Grade 0 vs. grade 1–4 hypomagnesemia

53/163

Price et al.25

ASPECCT

Conference presentation from phase III RCT

Panitumumab (6 mg/kg every 2 weeks) vs. Cetuximab (400 mg/m2 loading dose, then 250 mg/m2 weekly) in the third-line treatment of mCRC*

Grade 0 vs. grade 1–4 hypomagnesemia

Cetuximab group: 95/408 Panitumumab group:

     

143/353

Burkes et al.22

PRIME

Conference presentation from phase III RCT

Panitumumab (6 mg/kg every 2 weeks) with FOLFOX4 vs. FOLFOX4 alone in the first-line treatment of mCRC

Grade 0 vs. grade 1–4 hypomagnesemia

168/154

  1. Hypo-mg: hypo-magnesemia, Normo-mg: normo-magnesemia, FOLFOX: folinic acid, fluorouracil& oxaliplatin, FOLFIRI: folinic acid, fluorouracil& irinotecan, mCRC: metastatic colorectal cancer, NCIC CTG/AGITG CO. 17: National Cancer Institute of Canada Clinical Trials Group and Australasian Gastrointestinal Trials Group CO. 17, RCT: randomized control trial, BSC: best supportive care, ASPECCT: A Study of Panitumumab Efficacy and Safety Compared to Cetuximab, PRIME: Panitumumab Randomized Trial in Combination with Chemotherapy for Metastatic Colorectal Cancer to Determine Efficacy.
  2. *The panitumumab and cetuximab arm in ASPECCT was separated for analysis.