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Three studies published between 1999 and 2000 that included almost 20,000 IVF children found no increase in cancers, the Bergh statement says, and the Scandinavian database shows not a single case of retinoblastoma in 6,000 IVF children.
The Dutch study "is small and bases several figures -- including the percentage of IVF births in the Netherlands -- on assumptions rather than real observations," the Bergh statement says.
An accompanying editorial by Dr. David BenEzra of the pediatric ophthalmology unit at Hadassah Hebrew University in Jerusalem says, "From the many published papers about the incidence of malignancies in large cohorts of children born after assisted reproduction technologies, none has reported the incidence or prevalence of retinoblastoma."
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Nevertheless, the editorial adds, "there is little doubt that a heightened awareness and a multidisciplinary approach with a closer follow-up of children conceived with assisted reproduction technologies are needed."
Further studies are needed to confirm that the higher risk exists and to work out any possible cause-and-effect mechanism, Moll says.
"We have contact with IVF-involved doctors to discuss this subject," she adds.
More information
You can learn more about in vitro fertilization from the American Association for Reproductive Medicine, which also has a page on risks. Page: << Prev | 1 | 2
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