We might see some more out of Dr Brehm.

Although she is quite LC-skeptical in Fitness Central: Protein Power , she has been funded by the AHA for three years on Effects Of A Ketogenic Diet On Body Weight And Cardiovascular Risk Factors (a pdf file) at Cincinnati Children's

She still had her funding as of August, and in March she said the one-year and two-year results would be written up.

Sure, a year and two years will not be "long enough to determine if the LCHP diet is safe over the long term", and who knows what her LCHP diet is (where ARE the details in that Reuters article?). Nevertheless, this might be a crack in the wall...