The collection by the National Court of the Right of Asylum of information necessary for the examination of an appeal against a decision of the French Office for the Protection of Refugees and Stateless Persons must not have the effect of revealing to the alleged perpetrators of persecution or serious harm the existence of this asylum application or information concerning it. The court may not base its decision exclusively on information the source of which has remained confidential with regard to the applicant. The court may not base its decision exclusively on information the source of which has remained confidential with regard to the applicant. The court may not base its decision exclusively on information the source of which has remained confidential with regard to the applicant.