Faecal pyruvate kinase isoenzyme type M2 for colorectal cancer screening: A meta-analysis

Table 1 Results of the literature search

Results	Reference
All papers dealing with faecal M2-PK found in a literature search of Pubmed and Embase	[7, 8, 10,18, 20-49]
Additional published studies known to the authors	[50-53]
Excluded papers - reasons for exclusion
Unique combination of antibodies	[47]
Reviews	[18, 24, 26, 28, 34, 38, 42]
Author replies or comments	[27, 32, 40]
Paper in Bulgarian language	[29]
No sensitivities or specificities calculated	[21, 48]
Studies referred to IBD	[20, 22, 23, 25, 36, 39, 43]
Included papers
Studies found in Pubmed and Embase	[7, 8, 10, 30, 31, 33, 35, 37, 41, 44-46, 49]
Published studies known to the authors	[50-53]

IBD: Inflammatory bowel diseases; faecal M2-PK: Faecal pyruvate kinase isoenzyme type M2