sporadic


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sporadic

 [spŏ-rad´ik]
occurring singly; widely scattered; not epidemic or endemic.

spo·rad·ic

(spō-rad'ik),
1. Denoting a temporal pattern of disease occurrence in an animal or human population in which the disease occurs only rarely and without regularity.
2. In the genetic context, sporadic denotes a singleton or sport. Several quite different and disparate phenomena are covered by this term, including a new mutation; occult nonpaternity; the chance outcome for a recessive trait in two carrier parents with a small family; extreme variability in the expression of a gene; an environmental phenocopy; a multilocal genocopy, etc. No useful properties can be predicated of all members of this class; and the term is notionally useless.
3. Occurring irregularly, haphazardly.
[G. sporadikos, scattered]

sporadic

/spo·rad·ic/ (spo-rad´ic) occurring singly; widely scattered; not epidemic or endemic.

sporadic

(spə-răd′ĭk, spô-)
adj.
1. Occurring at irregular intervals or in isolated or scattered places; having no pattern or order: his sporadic attendance in class; rebels who put up sporadic resistance.
2. Medicine Not epidemic, endemic, or inherited. Used of a disease or condition: Most cancers are sporadic, caused by genetic mutations that are not heritable.

spo·rad′i·cal·ly adv.
spo·rad′i·cal·ness n.

sporadic

[spôrat′ik]
Etymology: Gk, sporaden, scattered
(of a number of events) occurring at scattered, intermittent, and apparently random intervals.

sporadic

Epidemiology adjective Referring to a noninherited condition that arises rarely in a particular population Genetics adjective Referring to an event attributable to changes in somatic DNA, which may be inherited, but unpredictably

spo·rad·ic

(spōr-ad'ik)
1. Denoting a temporal pattern of disease occurrence in an animal or human population in which the disease occurs only rarely and without regularity.
See also: endemic, epidemic, epizootic
2. Occurring irregularly, haphazardly.
[G. sporadikos, scattered]

sporadic

having a distribution confined to limited and dispersed localities; scattered.

Sporadic

Occurring at random or by chance, and not as a result of a genetically determined, or inherited, trait.

sporadic

irregular, i.e. occurring from time to time

spo·rad·ic

(spōr-ad'ik)
1. Denoting temporal pattern of disease occurrence in which the disease occurs only rarely and without regularity.
2. Occurring irregularly, haphazardly.
[G. sporadikos, scattered]

sporadic

occurring irregularly, usually infrequently.
References in periodicals archive ?
By evaluating a woman's clinical information (Gail score) and genetic markers (SNP profile), BREVAGenplus will assist physicians in developing personalized risk management plans and taking appropriate steps towards managing each woman's risk of developing sporadic breast cancer with greater precision than ever before.
They are also developing animal models of sporadic pilocytic astrocytoma for drug discovery and testing.
5%) of the sporadic drinkers, and 2 (25%) of the heavy drinkers.
Most cases (1,787/2,228 [80%]) were sporadic (Table 1; Figure 2).
The discovery means some treatment methods for people with familial ALS could also be used on people with sporadic ALS.
In fact, absence of significant findings on all MRI sequences throughout the course of sporadic CJD has been reported in some cases (16, 17).
Goodwin told her audience that "their results were virtually identical to the sporadic group.
An autopsy is necessary to distinguish sporadic CJD from variant CJD, which is linked to exposure, probably through eating, to cattle infected with mad cow disease, or bovine spongiform encephalopathy, in order to curb the spread of BSE, the officials said.
Instead of having healthy heme, porphyria patients accumulate toxic versions, bringing on sporadic attacks of psychosis.
I think they will be sporadic,'' Dodgers manager Jim Tracy said.
Secretary Linda Kinahan, 61, from West Derby, contracted the debilitating illness, sporadic CJD (CreutzfeldJakob Disease), a month after retiring.