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Multiple sclerosis (MS) is a chronic immune-mediated demyelinating disease of the central nervous system characterized by relapses and remissions. The risk of acquiring this complex disease is associated with exposure to environmental factors in genetically susceptible individuals. The epidemiology of MS has been extensively studied. We review the(More)
BACKGROUND Creutzfeldt-Jakob disease is a transmissible neurodegenerative disorder that occurs more than 100 times more frequently among Libyan Jews than in the worldwide population. We examined 11 patients with the disease--10 Libyan Jews from Israel and 1 Libyan Jew from Italy--to determine whether abnormalities of the prion protein could be detected in(More)
We performed genomic mapping of a family with autosomal dominant nocturnal frontal lobe epilepsy (ADNFLE) and intellectual and psychiatric problems, identifying a disease-associated region on chromosome 9q34.3. Whole-exome sequencing identified a mutation in KCNT1, encoding a sodium-gated potassium channel subunit. KCNT1 mutations were identified in two(More)
A countrywide search for Creutzfeldt-Jakob disease in Israel disclosed 29 cases with onset between 1963 and 1972. Incidence in various ethnic groups varied in the narrow range of 0.4 to 1.9 per million population except among Jewish immigrants from Libya, among whom the incidence was 31.3 per million. An extraordinary excess of Creutzfeldt-Jakob disease(More)
This case-control study was aimed at identifying environmental risk factors for multiple-sclerosis (MS). Ninety-three Israeli-born MS patients identified in country-wide studies and 94 age- and sex-matched controls were interviewed. The questionnaire covered a large span of factors at ages 0, 10 and onset of the disease, with particular emphasis on(More)
There have been few population-based studies of acute transverse myelitis (ATM). Therefore, incidence and population selectivity of this disorder in different regions is not well known. Data on all Jewish patients with ATM throughout Israel were collected for the period 1955 through 1975. Based on 62 patients who satisfied rigid diagnostic criteria, the(More)
All identified Israeli patients with amyotrophic lateral sclerosis (ALS) with onset of the disease from 1959 through 1975 (n=318) were evaluated clinically. Most of our patients (63%) presented with weakness; only 10% presented with atrophy and 3% with fasciculations. In 31% of the cases, the onset of the disease was focal and 22% of the patients presented(More)
In a comprehensive epidemiological survey among Jews living in Israel, the average prevalence of myotonic dystrophy (DM) was 15.7/10(5) (1 case in 6369) with intercommunity variations; the Ashkenazi Jews had the lowest rate, 5.7/10(5) (1 case in 17544) as compared to the rate in the Sephardim/Oriental Jews 20/10(5) (1 case in 5000) and the in the Yemenite(More)
The incidence of amyotrophic lateral sclerosis (ALS) in Israel was determined for the period 1959 through 1974. A total of 246 patients with ALS was ascertained. The male-female ratio was 1.62:1. The average annual age-adjusted incidence per 100,000 persons increased during this period by 41%. The increase was almost entirely due to a higher rate in persons(More)