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Proband is the first affected family member who seeks medical attention for a genetic disorder.
Additional recommended knowledge
Between the ancestors of the proband, there are other subjects with the manifest disease, but they might be unknown due to the lack of information regarding those individuals or the disease at the time they lived. Other ancestors might be undiagnosed due to the incomplete penetrance or variable expressivity.
The diagnostic of the proband raise the level of suspicion for the proband's relatives and some of them may be diagnosed with the same disease. Conventionally, when drawing a pedigree chart, instead of the first diagnosed person, the proband may be chosen between the manifestly ill ancestors (parents, grandparents) from the first generation where the disease is found.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Proband". A list of authors is available in Wikipedia.|