Nor was there an association between ERCC1 19442C>A genotypes and grade 3 or 4 haematological toxicity during the first cycle (leukopenia, P=0.273; neutropenia, P=0.290; anaemia, P=1.000; thrombocytopenia, P=1.000). Here, ERCC1 is linked to Decreased total neutrophil count.