Another suggestion by Burridge is that Akhenaten may have suffered from Marfan's Syndrome. Marfan's syndrome, unlike Froelich's, does not result in any lack of intelligence or sterility. It is associated with a sunken chest, long curved spider-like fingers (arachnodactyly), occasional congenital heart difficulties, a high curved or slightly cleft palate, and a highly curved cornea or dislocated lens of the eye, with the requirement for bright light to see well. Marfan's sufferers tend towards being taller than average, with a long, thin face, and elongated skull, overgrown ribs, a funnel or pigeon chest, and larger pelvis, with enlarged thighs and spindly calves. Marfan's syndrome is a dominant characteristic, and sufferers have a 50% chance of passing it on to their children. All of these symptoms arguably sometimes appear in depictions of Akhenaten and of his children. Recent CT scans of Tutankhamun report a cleft palate and a fairly long head, as well as an abnormal curvature of the spine and fusion of the upper vertebrae, a condition associated with scoliosis, all conditions associated with Marfan's syndrome. However, DNA tests on Tutankhamun, in 2010, proved negative for Marfan Syndrome. More recently, Homocystinuria was suggested as a possible diagnosis. Patients suffering from homocystinuria have Marfan habitus. However, as an autosomal recessive disease, it seems to fit better into Akhenaten's family tree — Akhenaten's parents, Amenhotep III and Tiye, were probably healthy, and Marfan Syndrome was ruled out following DNA tests on Tutankhamun in 2010.