The fields of rare diseases research and orphan products development continue to expand with more products in research and development status. In recent years, the role of the patient advocacy groups has evolved into a research partner with the academic research community and the bio-pharmaceutical industry. Unique approaches to research and development require epidemiological data not previously available to assist in protocol study design and patient recruitment for clinical trials required by regulatory agencies prior to approval for access by patents and practicing physicians.

In our etiologic research, we epidemiologists need to leave behind the concepts of ‘cohort’ study and ‘case–control’ study and adopt that of the etiologic study as the singular substitute for these. With this sentence, the famous epidemiologist Professor Olli S. Miettinen began his personal re ection on the future of the epidemiology [1]. He sought to highlight the fact that the role of the epidemiologist should be mainly focused on aetiological research. Nevertheless, the widespread idea still exists that epidemiology is limited to purely providing gures and descriptive data on the frequency and distribution of disease. Indeed, it is more than likely that the precise aim of those rst classic epidemiological steps, i. e. , methods essentially based on describing the distri- tion of a given disease, is still not all that well understood by many scientists, let alone the general public. Such descriptions seek to generate hypotheses and afford explanations for key factors (be these risk factors or the presumable causes th- selves), which might justify differences in terms of persons, time or place and, in turn, ultimately serve to develop preventive measures and/or gain quality-adjusted life years. To restrict the goals of epidemiology to activities exclusively concerned with reporting gures or even complex statistical results is a great mistake, one that renders it dif cult to take full advantage of the epidemiologist’s true role, which is “to study disease determinants and to assess the actual impact of factors involved in their development, distribution and dissemination”.

Rare diseases collectively affect millions of Americans of all ages, but developing drugs and medical devices to prevent, diagnose, and treat these conditions is challenging. The Institute of Medicine (IOM) recommends implementing an integrated national strategy to promote rare diseases research and product development.

In our etiologic research, we epidemiologists need to leave behind the concepts of ‘cohort’ study and ‘case–control’ study and adopt that of the etiologic study as the singular substitute for these. With this sentence, the famous epidemiologist Professor Olli S. Miettinen began his personal re ection on the future of the epidemiology [1]. He sought to highlight the fact that the role of the epidemiologist should be mainly focused on aetiological research. Nevertheless, the widespread idea still exists that epidemiology is limited to purely providing gures and descriptive data on the frequency and distribution of disease. Indeed, it is more than likely that the precise aim of those rst classic epidemiological steps, i. e. , methods essentially based on describing the distri- tion of a given disease, is still not all that well understood by many scientists, let alone the general public. Such descriptions seek to generate hypotheses and afford explanations for key factors (be these risk factors or the presumable causes th- selves), which might justify differences in terms of persons, time or place and, in turn, ultimately serve to develop preventive measures and/or gain quality-adjusted life years. To restrict the goals of epidemiology to activities exclusively concerned with reporting gures or even complex statistical results is a great mistake, one that renders it dif cult to take full advantage of the epidemiologist’s true role, which is “to study disease determinants and to assess the actual impact of factors involved in their development, distribution and dissemination”.

NORD Guide to Rare Disorders is a comprehensive, practical, authoritative guide to the diagnosis and management of more than 800 rare diseases. The diseases are discussed in a uniform, easy-to-follow format--a brief description, signs and symptoms, etiology, related disorders, epidemiology, standard treatment, investigational treatment, resources, and references.The book includes a complete directory of orphan drugs, a full-color atlas of visual diagnostic signs, and a Master Resource List of support groups and helpful organizations. An index of symptoms and key words offers physicians valuable assistance in finding the information they need quickly.

This User’s Guide is intended to support the design, implementation, analysis, interpretation, and quality evaluation of registries created to increase understanding of patient outcomes. For the purposes of this guide, a patient registry is an organized system that uses observational study methods to collect uniform data (clinical and other) to evaluate specified outcomes for a population defined by a particular disease, condition, or exposure, and that serves one or more predetermined scientific, clinical, or policy purposes. A registry database is a file (or files) derived from the registry. Although registries can serve many purposes, this guide focuses on registries created for one or more of the following purposes: to describe the natural history of disease, to determine clinical effectiveness or cost-effectiveness of health care products and services, to measure or monitor safety and harm, and/or to measure quality of care. Registries are classified according to how their populations are defined. For example, product registries include patients who have been exposed to biopharmaceutical products or medical devices. Health services registries consist of patients who have had a common procedure, clinical encounter, or hospitalization. Disease or condition registries are defined by patients having the same diagnosis, such as cystic fibrosis or heart failure. The User’s Guide was created by researchers affiliated with AHRQ’s Effective Health Care Program, particularly those who participated in AHRQ’s DEcIDE (Developing Evidence to Inform Decisions About Effectiveness) program. Chapters were subject to multiple internal and external independent reviews.

This classic reference, now with almost 900 disease descriptions, is edited by nationally known pediatrician Jess G. Thoene, M.D. & provides a quick, organized approach to identifying puzzling & unusual symptoms, giving patients the opportunity for early diagnosis & treatment. Special features include: * A full color atlas of visual clues, cross referenced to disease listings. * Thirteen separate specialty sections with an expert overview to introduce each section. Eminent clinicians from the outstanding research centers in rare diseases give you the current status of research & practical approaches to diagnosis & therapy of the rare diseases in that specialty. * Full reference to more than 250 orphan drugs. Each drug is cross referenced to the appropriate disease description. * Clear language for the Layperson. Though written for physicians, the descriptions of diseases, symptoms & treatments are clear & understandable for patients, educators & others outside the medical profession. Each disease description provides symptomatology, etiology, affected population & a comparison of related disorders. Each disease description contains a list of other resources to consult: voluntary agencies, units of the National Institutes of Health, research centers around the country, etc. Addresses & phone numbers are provided in a central reference. Library Journal: "...PHYSICIAN'S GUIDE...is recommended for medical collections & public libraries with consumer health collections."