MMP1 and neoplasm: No significant differences were detected between these and other tumour characteristics and MMP genotypes, irrespective of whether the analysis was performed as ‘high’ vs ‘low’ (viz., 2G/2G genotype vs both 1G/2G and 1G/1G, Table 2) or ‘low’ vs ‘high’ (viz., 1G/1G genotype vs both 1G/2G and 2G/2G) MMP-1 expression (data not shown).