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Lafrenière RG, Rochefort DL, Chrétien N, Rommens JM, Cochius JI, Kälviäinen R, Nousiainen U, Patry G, Farrell K, Söderfeldt B, Federico A, Hale BR, Cossio OH, Sørensen T, Pouliot MA, Kmiec T, Uldall P, Janszky J, Pranzatelli MR, Andermann F, Andermann E, Rouleau GA. Unstable insertion in the 5' flanking region of the cystatin B gene is the most common mutation in progressive myoclonus epilepsy type 1, EPM1. Nat Genet 1997; 15:298-302. [PMID: 9054946 DOI: 10.1038/ng0397-298] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Progressive myoclonus epilepsy type 1 (EPM1, also known as Unverricht-Lundborg disease) is an autosomal recessive disorder characterized by progressively worsening myoclonic jerks, frequent generalized tonic-clonic seizures, and a slowly progressive decline in cognition. Recently, two mutations in the cystatin B gene (also known as stefin B, STFB) mapping to 21q22.3 have been implicated in the EPM1 phenotype: a G-->C substitution in the last nucleotide of intron 1 that was predicted to cause a splicing defect in one family, and a C-->T substitution that would change an Arg codon (CGA) to a stop codon (TGA) at amino acid position 68, resulting in a truncated cystatin B protein in two other families. A fourth family showed undetectable amounts of STFB mRNA by northern blot analysis in an affected individual. We present haplotype and mutational analyses of our collection of 20 unrelated EPM1 patients and families from different ethnic groups. We identify four different mutations, the most common of which consists of an unstable approximately 600-900 bp insertion which is resistant to PCR amplification. This insertion maps to a 12-bp polymorphic tandem repeat located in the 5' flanking region of the STFB gene, in the region of the promoter. The size of the insertion varies between different EPM1 chromosomes sharing a common haplotype and a common origin, suggesting some level of meiotic instability over the course of many generations. This dynamic mutation, which appears distinct from conventional trinucleotide repeat expansions, may arise via a novel mechanism related to the instability of tandemly repeated sequences.
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102
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Kis Z, Janszky J, Adam P, Vinogradov AV, Kobayashi T. Entangled vibrational states in polyatomic molecules. PHYSICAL REVIEW A 1996; 54:5110-5117. [PMID: 9914080 DOI: 10.1103/physreva.54.5110] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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103
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Domokos P, Adam P, Janszky J, Zeilinger A. Atom de Broglie Wave Deflection by a Single Cavity Mode in the Few-Photon Limit: Quantum Prism. PHYSICAL REVIEW LETTERS 1996; 77:1663-1666. [PMID: 10063140 DOI: 10.1103/physrevlett.77.1663] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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104
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Szabo S, Adam P, Janszky J, Domokos P. Construction of quantum states of the radiation field by discrete coherent-state superpositions. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:2698-2710. [PMID: 9913183 DOI: 10.1103/physreva.53.2698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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105
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Janszky J, Kim MG, Kim MS. Quasiprobabilities and the nonclassicality of fields. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1996; 53:502-506. [PMID: 9912908 DOI: 10.1103/physreva.53.502] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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106
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Janszky J, Domokos P, Szabó S, Adam P. Quantum-state engineering via discrete coherent-state superpositions. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1995; 51:4191-4193. [PMID: 9912095 DOI: 10.1103/physreva.51.4191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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107
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Domokos P, Adam P, Janszky J. One-dimensional coherent-state representation on a circle in phase space. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:4293-4297. [PMID: 9911404 DOI: 10.1103/physreva.50.4293] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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108
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Adam P, Janszky J. Comment on "Squeezing and antisqueezing for a harmonic oscillator having a sudden change of mass". PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:3548-3550. [PMID: 9911312 DOI: 10.1103/physreva.50.3548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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109
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Domokos P, Janszky J, Adam P. Single-atom interference method for generating Fock states. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:3340-3344. [PMID: 9911282 DOI: 10.1103/physreva.50.3340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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110
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Janszky J, Vinogradov AV, Kobayashi T, Kis Z. Vibrational Schrödinger-cat states. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:1777-1784. [PMID: 9911071 DOI: 10.1103/physreva.50.1777] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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111
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Janszky J, Vinogradov AV, Walmsley IA, Mostowski J. Competition between geometrical and dynamical squeezing during a Franck-Condon transition. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 50:732-740. [PMID: 9910944 DOI: 10.1103/physreva.50.732] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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112
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Kiss T, Janszky J, Adam P. Time evolution of harmonic oscillators with time-dependent parameters: A step-function approximation. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 49:4935-4942. [PMID: 9910814 DOI: 10.1103/physreva.49.4935] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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113
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Adam P, Földesi I, Janszky J. Complete basis set via straight-line coherent-state superpositions. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1994; 49:1281-1287. [PMID: 9910361 DOI: 10.1103/physreva.49.1281] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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114
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Janszky J, Adam P, Vinogradov A, Kobayashi T. Vibrational state shaping for selective laser chemistry. Chem Phys Lett 1993. [DOI: 10.1016/0009-2614(93)85147-g] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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115
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Janszky J, Domokos P, Adam P. Coherent states on a circle and quantum interference. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1993; 48:2213-2219. [PMID: 9909842 DOI: 10.1103/physreva.48.2213] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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116
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Janszky J, Adam P. Strong squeezing by repeated frequency jumps. PHYSICAL REVIEW A 1992; 46:6091-6092. [PMID: 9908873 DOI: 10.1103/physreva.46.6091] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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117
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Janszky J, Adam P, Vinogradov AV. Janszky, Adam, and Vinogradov reply. PHYSICAL REVIEW LETTERS 1992; 68:3816. [PMID: 10045808 DOI: 10.1103/physrevlett.68.3816] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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118
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Janszky J, Adam P, Vinogradov A, Kobayashi T. Influence of phonon squeezing on the transient spectrum. ACTA ACUST UNITED AC 1992. [DOI: 10.1016/0584-8539(92)80195-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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119
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Janszky J, Vinogradov AV. Squeezing via one-dimensional distribution of coherent states. PHYSICAL REVIEW LETTERS 1990; 64:2771-2774. [PMID: 10041807 DOI: 10.1103/physrevlett.64.2771] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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120
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Janszky J, Kobayashi T. Effects of damping and reamplification of pure number states. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 41:4074-4076. [PMID: 9903587 DOI: 10.1103/physreva.41.4074] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
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121
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Janszky J, Yushin Y. Comment on "Squeezing and frequency jump of a harmonic oscillator". PHYSICAL REVIEW. A, GENERAL PHYSICS 1989; 39:5445-5446. [PMID: 9901115 DOI: 10.1103/physreva.39.5445] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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122
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Janszky J, Yushin Y. Many-photon processes with the participation of squeezed light. PHYSICAL REVIEW. A, GENERAL PHYSICS 1987; 36:1288-1292. [PMID: 9898983 DOI: 10.1103/physreva.36.1288] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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123
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Janszky J, Corradi G, Gyuzalian RN. Tilted-pulse second-harmonic beam analysis for femtosecond to subnanosecond laser pulse-duration measurements. ACTA ACUST UNITED AC 1984. [DOI: 10.1007/bf00688350] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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124
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Janszky J, Corradi G, Hamilton DS. Temporal analysis of short laser pulses using degenerate four-wave mixing. APPLIED OPTICS 1984; 23:8. [PMID: 18204506 DOI: 10.1364/ao.23.000008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/25/2023]
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125
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Silvestrova IM, Pisarewskii YV, Földvári I, Péter Á, Voszka R, Janszky J. Refinement of some optical and acoustic parameters of paratellurite. ACTA ACUST UNITED AC 1981. [DOI: 10.1002/pssa.2210660162] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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