Hardly. These mummies are from 1400 BC ... there are no records of royal intermarriage until medieval ages.

"The ancient Egyptian royal families were almost expected to marry within the family, as inbreeding was present in virtually every dynasty. Pharaohs were not only wed to their brothers and sisters, but there were also "double-niece" marriages, where a man married a girl whose parents were his own brother and sister."

http://www.medicalbag.com/grey-matter/impact-of-royal-inbree...

Lastly, most mummies are not royal family members. Rulers were often buried with their servants. The article doesn't specify who exactly they analysed.