Comprehensive Cancer Networks

Variation in outcomes across individual CCNs likely reflects underlying structural differences between networks rather than a coherent CCN-level effect. No consistent evidence was found that CCNs reduce healthcare costs, lower mortality, rationalise referral patterns, or eliminate redundant diagnostics for colon or pancreatic cancer in the Netherlands. Broad implementation of CCNs without further research into the determinants of their success is not yet warranted. CCNs are contractual agreements between general hospitals and an academic hospital, structured around shared governance, tumour management groups, multidisciplinary team discussions, uniform cancer pathways, quality standards, and information exchange systems. By 2021, four CCNs were active in the Netherlands; regions without a formal CCN served as the study control group. Where cost reductions were observed, the hypothesised causal pathway through referral concentration was not supported by parallel findings, casting doubt on whether savings operated through expected mechanisms. The theoretical mechanism behind CCNs holds that structured referrals, improved MTD-driven treatment decisions, and uniform pathways collectiv…