Expression of DNAH2, DNAH5, DNAH7 and DNAH11 mRNA was significantly reduced in ALS (p=0.029, p=0.012, p=0.005 and p=0.023, respectively), whereas DNAH9 mRNA was not altered (p=0.14). The gene discussed is DNAH5; the disease is amyotrophic lateral sclerosis.