Abstract: The present invention related to the proline rich transmembrane protein 2 (PRRT2) gene, and the identification of mutations and variations in PRRT2 that give rise to seizure and movement disorders. Accordingly, the present invention provides methods for the diagnosis or prognosis of such disorders by identifying alterations in the PRRT2 gene. Identification of alterations in the PRRT2 gene also enables the identification of subjects with an increased likelihood of having an offspring predisposed to such disorders. The present invention also provides an isolated nucleic acid molecule comprising an alteration in the PRRT2 gene, wherein said alteration produces a seizure and/or movement disorder phenotype. Also provided is an isolated PRRT2 polypeptide that comprises an alteration which produces a seizure and/or movement disorder phenotype.

Abstract: The present invention relates to the proline rich transmembrane protein 2 (PRRT2) gene, and the identification of mutations and variations in PRRT2 that give rise to seizure and movement disorders. Accordingly, the present invention provides methods for the diagnosis or prognosis of such disorders by identifying alterations in the PRRT2 gene. Identification of alterations in the PRRT2 gene also enables the identification of subjects with an increased likelihood of having an offspring predisposed to such disorders. The present invention also provides an isolated nucleic acid molecule comprising an alteration in the PRRT2 gene, wherein said alteration produces a seizure and/or movement disorder phenotype. Also provided is an isolated PRRT2 polypeptide that comprises an alteration which produces a seizure and/or movement disorder phenotype.

Abstract: Methods and kits for the diagnosis of illnesses related to protocadherin 19 (PCDH19) protein deficiency or altered PCDH19 protein function are provided, as well as methods and kits for the identification of a predisposition to such illnesses and methods of screening subjects to identify carriers of such illnesses and methods and kits for the therapeutic or prophylactic treatment of PCDH19 deficiency or altered PCDH19 protein function. Further, nucleotide and amino acid sequences corresponding to a complete PCDH19 open reading frame (ORF), mutant sequences encoding non-functional PCDH19 mRNA or altered PCDH19 mRNA are described along with transformed cells and non-human transgenic animals comprising wild-type or mutant PCDH19 ORF nucleotide sequences.

Abstract: Methods and kits for the diagnosis of illnesses related to protocadherin 19 (PCDH 19) protein deficiency or altered PCDH 19 protein function, in particular EFMR (Epilepsy and Mental Retardation limited to Females) are provided, as well as methods and kits for the identification of a predisposition to such illnesses and methods of screening subjects to identify carriers of such illnesses and methods and kits for the therapeutic or prophylactic treatment of PCDH 19 deficiency or altered PCDH 19 protein function. Further, nucleotide and amino acid sequences corresponding to a complete PCDH19 open reading frame (ORF), mutant sequences encoding non-functional PCDH19 mRNA or altered PCDH19 mRN A are described along with transformed cells and non-human transgenic animals comprising wild-type or mutant PCDH19 ORF nucleotide sequences.

Abstract: The present invention relates to the proline rich transmembrane protein 2 (PRRT2) gene, and the identification of mutations and variations in PRRT2 that give rise to seizure and movement disorders. Accordingly, the present invention provides methods for the diagnosis or prognosis of such disorders by identifying alterations in the PRRT2 gene. Identification of alterations in the PRRT2 gene also enables the identification of subjects with an increased likelihood of having an offspring predisposed to such disorders. The present invention also provides an isolated nucleic acid molecule comprising an alteration in the PRRT2 gene, wherein said alteration produces a seizure and/or movement disorder phenotype. Also provided is an isolated PRRT2 polypeptide that comprises an alteration which produces a seizure and/or movement disorder phenotype.

Abstract: The present invention relates to the proline rich transmembrane protein 2 (PRRT2) gene, and the identification of mutations and variations in PRRT2 that give rise to seizure and movement disorders. Accordingly, the present invention provides methods for the diagnosis or prognosis of such disorders by identifying alterations in the PRRT2 gene. Identification of alterations in the PRRT2 gene also enables the identification of subjects with an increased likelihood of having an offspring predisposed to such disorders. The present invention also provides an isolated nucleic acid molecule comprising an alteration in the PRRT2 gene, wherein said alteration produces a seizure and/or movement disorder phenotype. Also provided is an isolated PRRT2 polypeptide that comprises an alteration which produces a seizure and/or movement disorder phenotype.

Abstract: A method for the diagnosis of SMEI in a patient comprising: (1) detecting an alteration in the SCN1A gene, including in a regulatory region of the gene, in a patient sample; (2) ascertaining whether the alteration is known to be SMEI associated or non-SMEI associated; and (3) (a) establishing a diagnosis of a high probability of SMEI where the alteration is known to be SMEI associated; or (b) establishing a diagnosis of a low probability of SMEI where the alteration is non-SMEI associated; or (e) or, if not known to be either, (i) considering genetic data for parents and/or relatives; (ii) establishing whether the alteration has arisen de novo or is inherited; and (iii) establishing a diagnosis of a low probability of SMEI where the alteration is inherited but a diagnosis of a high probability of SMEI if the alteration is de novo.

Abstract: A method of identifying a subject predisposed to a disorder associated with ion channel dysfunction, comprising ascertaining whether at least one of the genes encoding ion channel subunits in said subject has undergone a mutation event as set forth in one of SEQ ID Numbers: 1-72.

Abstract: A method of identifying a subject predisposed to a disorder associated with ion channel dysfunction, comprising ascertaining whether at least one of the genes encoding ion channel subunits in said subject has undergone a mutation event such that a cDNA derived from said subject has the sequence set forth in one of SEQ ID NOS: 1-134.

Abstract: Methods and kits for the diagnosis of illnesses related to protocadherin 19 (PCDH 19) protein deficiency or altered PCDH 19 protein function, in particular EFMR (Epilepsy and Mental Retardation limited to Females) are provided, as well as methods and kits for the identification of a predisposition to such illnesses and methods of screening subjects to identify carriers of such illnesses and methods and kits for the therapeutic or prophylactic treatment of PCDH 19 deficiency or altered PCDH 19 protein function. Further, nucleotide and amino acid sequences corresponding to a complete PCDH19 open reading frame (ORF), mutant sequences encoding non-functional PCDH19 mRNA or altered PCDH19 mRN A are described along with transformed cells and non-human transgenic animals comprising wild-type or mutant PCDH19 ORF nucleotide sequences.

Abstract: A method for the diagnosis of SMEI in a patient comprising: (1) detecting an alteration in the SCN1A gene, including in a regulatory region of the gene, in a patient sample; (2) ascertaining whether the alteration is known to be SMEI associated or non-SMEI associated; and (3) (a) establishing a diagnosis of a high probability of SMEI where the alteration is known to be SMEI associated; or (b) establishing a diagnosis of a low probability of SMEI where the alteration is non-SMEI associated; or (e) or, if not known to be either, (i) considering genetic data for parents and/or relatives; (ii) establishing whether the alteration has arisen de novo or is inherited; and (iii) establishing a diagnosis of a low probability of SMEI where the alteration is inherited but a diagnosis of a high probability of SMEI if the alteration is de novo.

Abstract: A method of identifying a subject predisposed to a disorder associated with ion channel dysfunction, comprising ascertaining whether at least one of the genes encoding ion channel subunits in said subject has undergone a mutation event such that a cDNA derived from said subject has the sequence set forth in one of SEQ ID NOS: 1-134.

Abstract: A method for the diagnosis of SMEI in a patient comprising: (1) detecting an alteration in the SCN1A gene, including in a regulatory region of the gene, in a patient sample; (2) ascertaining whether the alteration is known to be SMEI associated or non-SMEI associated; and (3) (a) establishing a diagnosis of a high probability of SMEI where the alteration is known to be SMEI associated; or (b) establishing a diagnosis of a low probability of SMEI where the alteration is non-SMEI associated; or (e) or, if not known to be either, (i) considering genetic data for parents and/or relatives; (ii) establishing whether the alteration has arisen de novo or is inherited; and (iii) establishing a diagnosis of a low probability of SMEI where the alteration is inherited but a diagnosis of a high probability of SMEI if the alteration is de novo.

Abstract: A method for the diagnosis of an epilepsy syndrome, including SMEI or an SMEI-related syndrome, in a patient comprising testing for an alteration in the SCN1A gene in a sample obtained from the patient; and if an alteration is identified, comparing said alteration to any one of those listed in Table 3, wherein if said alteration is identical to any one of those listed in Table 3, a diagnosis of an epilepsy syndrome, including SMEI or an SMEI-related syndrome, in said patient is made in accordance with the correlation set forth in Table 3.

Abstract: A method of identifying a subject predisposed to a disorder associated with ion channel dysfunction, comprising ascertaining whether at least one of the genes encoding ion channel subunits in said subject has undergone a mutation event as set forth in one of SEQ ID Numbers: 1-72.

Abstract: A method for the diagnosis of a neonatal or infantile epilepsy syndrome as BFNIS in a patient comprising testing for the presence of an alteration in the SCN2A gene, including in a regulatory region of the gene, in a patient sample, and establishing a diagnosis which will indicate a high probability of BFNIS when an SCN2A alteration is detected or establishing a diagnosis which will indicate a low probability of BFNIS when an SCN2A alteration is not detected.

Abstract: A method for the diagnosis of SMEI in a patient comprising:

Abstract: An isolated nucleic acid molecule encoding a mutant mammalian beta-1 subunit of a voltage-gated sodium channel wherein a mutation event has occurred and said mutation event disrupts the functioning of an assembled sodium channel so as to produce an epilepsy phenotype, with the proviso that said mutation event is not one which results in a C121W substitution in the encoded polypeptide.