Abstract: The present invention relates to an in vitro method for determining that an individual is at risk of developing Alzheimer's disease, which comprises: —determining whether the individual harbours at least one variant allele of a susceptibility gene selected from the apolipoprotein J gene (APOJ) and the complement component receptor 1 gene (CR 1); —deducing that if the individual harbours at least one variant allele of the APOJ and/or CR1 gene, then the individual is at risk of developing Alzheimer's disease.

Abstract: The present invention pertains to the domain of brain diseases, and provides novel markers and methods for diagnosing a brain alteration in an individual, especially in patients suffering from neurodegenerative diseases such as Alzheimer's disease. The present invention also provides tools for evaluating the probability, for an individual, of developing the disease, as well as a target for identifying new drugs for treating neurodegenerative diseases such as Alzheimer's disease. In particular, the invention provides a genetic marker based on combination of two single nucleotide polymorphism, at positions ?389 and ?241 of the ornithine transcarbamylase (OTC) gene.

Abstract: The present invention pertains to the domain of brain diseases, and provides novel markers and methods for diagnosing a brain alteration in an individual, especially in patients suffering from neurodegenerative diseases such as Alzheimer's disease. The present invention also provides tools for evaluating the probability, for an individual, of developing the disease, as well as a target for identifying new drugs for treating neurodegenerative diseases such as Alzheimer's disease. In particular, the invention provides a genetic marker based on combination of two single nucleotide polymorphism, at positions ?389 and ?241 of the ornithine transcarbamylase (OTC) gene.

Abstract: The invention concerns a Cog47 protein and its polynucleotide, in particular associated with a predisposition to cognitive decline, to a conversion to dementia or to an already existing dementia, and the human S100? gene exhibiting a polymorphism associated with a predisposition to cognitive decline, to a conversion to dementia or to an already existing dementia. The invention also concerns a diagnostic method and a diagnostic kit.

Abstract: A method is provided for determining the susceptibility of a NIDDM patient towards sulfonylurea therapy by obtaining a sample from a NIDDM patient where the sample includes nucleic acid molecules containing a fragment of the SUR1 gene comprising the nucleotide in position −3 of exon 16 and detecting the presence or absence of the −3 t allele in position −3 of exon 6 whereby the presence of at least one −3 t allele identifies a NIDDM patient with a high susceptibility towards sulfonylurea therapy.

Abstract: A method is provided for determining the susceptibility of a NIDDM patient towards sulfonylurea therapy by obtaining a sample from a NIDDM patient where the sample includes nucleic acid molecules containing a fragment of the SUR1 gene comprising the nucleotide in position −3 of exon 16 and detecting the presence or absence of the −3t allele in position −3 of exon 16 whereby the presence of at least one −3t allele identifies a NIDDM patient with a high susceptibility towards sulfonylurea therapy.

Abstract: The invention concerns a method for diagnosing Alzheimer disease, consisting in demonstrating one or several mutations in the genomic DNA region regulating the expression of the apolipoprotein E gene, inducing a modification of the apolipoprotein E gene, with respect to a control population or a modification of the expression relative to the alleles of the apolipoprotein E gene.

Abstract: Combined use of at least two genetic markers selected from apolipoprotein E, D19S178 and apolipoprotein CII, for the diagnosis of Alzheimer's disease, especially apolipoprotein .epsilon.4, long apolipoprotein CII (30.+-.3 repeat patterns (CA) and short D19S178 (less than 167.+-.4 nucleotides) alleles. The invention also concerns a method for the diagnosis of Alzheimer's disease and a kit for carrying out said method.