The Ptolemaic dynasty (Ancient Greek: , "Ptolemaioi"), sometimes also known as the Lagids or Lagidae (Ancient Greek: , "Lagidai", after Lagus, Ptolemy I's father), was a Macedonian Greek royal family, which ruled the Ptolemaic Kingdom in Egypt during the Hellenistic period. Their rule lasted for 275 years, from 305 to 30 BC. They were the last dynasty of ancient Egypt.

Can we draw the following conclusion?
Many Ptolemaic rulers married their siblings and therefore passed on genetic health conditions.
It's impossible to say