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We carried out a retrospective multicentre study to assess the safety of home parenteral nutrition (HPN) in patients with ALS. We reviewed the case records of patients from French ALS centres treated with HPN by central venous catheter (CVC) using an implantable port between January 2005 and October 2009. Seventy-three patients received HPN for a total of 11,908 catheter days. Twenty-seven patients experienced a total of 37 CVC related complications resulting in an incidence rate of 3.11 CVC complications/1000 catheter days, including 1.93 septic complications and 1.09 mechanical complications/1000 catheter days. Metabolic complications were frequent but without serious consequences on mortality. The use of the catheter for intravenous therapies in addition to HPN was identified as a septicaemia's risk factor (relative risk (RR) == 2.54, confidence interval (CI) 1.56--4.14, p == 0.04). In conclusion, HPN is an alternative procedure to PEG in advanced ALS patients. The incidence of complications appears to be comparable to data from the literature on HPN in other diseases. A prospective study comparing HPN and radiologic inserted gastrostomy (RIG) would allow comparison of the relative risk-benefit and survival of these procedures. The relation of CVC and RIG placement timing and the complications'' occurrence should also be investigated. [ABSTRACT FROM AUTHOR]