Pregnant cancer patients: Start treatment ASAP

“In some cases, preterm delivery was spontaneous, and it is possible that cancer treatment plays a role in this. But we do not know what exactly triggers preterm delivery. It could be that chemotherapy induces preterm contractions or vaginal inflammation with preterm rupture of the membranes.”

Cardiac function

The researchers assessed cardiac function in 47 three-year-olds whose mothers had cancer and 47 control children.

There were no significant differences between the exposed and control children for most measures of cardiac function, such as heart rate, ejection fraction, fractional shortening, global longitudinal strain, and circumferential strain.

The only exceptions were diastolic blood pressure, which was higher among exposed children (P=0.001), and tissue Doppler imaging measurements of the basal segment of the interventricular septum. There were higher mean peak systolic and early diastolic velocities in the control group than the exposed group (P=0.003 for both comparisons).

The researchers noted, however, that the differences in tissue Doppler velocities were not present when comparing the control group and the 26 children who were exposed to anthracyclines.

Next steps

Last year, Dr Amant reported similarly favorable results in 54 children exposed to chemotherapy or radiation in utero. The new report is a continuation of this work.

“These latest results are, again, reassuring,” Dr Amant said. “But given that we have a larger group of children . . . , the current data are much more robust.”

However, he also pointed out that this study has some limitations.

“Our data include many types of chemotherapy, but we cannot guarantee that all types of chemotherapy are safe,” Dr Amant said. “We need to look at larger numbers of children and larger numbers exposed to each drug in order to be able to document the potential effects of individual drugs.”

“In addition, we cannot extrapolate to newer drugs, including targeted drugs. We need longer follow-up to see if there are any long-term toxic effects in cases where cisplatin was administered before birth.”

“For these reasons, we will continue to follow these children until the age of 18 years, and we will enlarge the group. This will allow us to document longer-term effects and to draw conclusions for specific drugs. In addition, we will investigate to what extent anticancer drugs are diluted in the body during pregnancy and also [examine] the psycho-emotional needs of mothers and their partners.”