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Letters |3 May 2011

Age at Cancer Diagnosis Among Persons With AIDS

Charlotte Sakarovitch, PhD; Eric Fontas, MD, PhD

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Author, Article, and Disclosure Information
Potential Conflicts of Interest: None disclosed.
  • From Department of Public Health, Nice University Hospital, 06202 Nice, France.
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Potential Conflicts of Interest: None disclosed.
This article has been corrected. For original version, click “Original Version (PDF)” in column 2.
TO THE EDITOR:
Shiels and colleagues (1) showed that age at cancer diagnosis is often similar in the AIDS population and the general population after adjustment for age differences. However, Martin and Volberding's related editorial (2) commented on the complexity of defining premature aging, and we will demonstrate that, in some cases, the same age at diagnosis can hide real differences.
Let's denote IAIDS(a) and Igen(a) as the cancer incidence rates at age a among, respectively, the AIDS population and the general population. Shiels and colleagues stated that, after adjustment for age, “if HIV merely increases the risk for … cancer, the age-at-diagnosis curve for the AIDS population would be expected to have the same shape as that for the expected cases in the general population” and conclude that HIV does not accelerate carcinogenesis. This theory can be expressed as a proportional incidence rate by age in the AIDS population compared with the general population as follows:
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Sakarovitch C, Fontas E. Age at Cancer Diagnosis Among Persons With AIDS. Ann Intern Med. 2011;154:642. doi: 10.7326/0003-4819-154-9-201105030-00012

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Published: Ann Intern Med. 2011;154(9):642.

DOI: 10.7326/0003-4819-154-9-201105030-00012

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