Upvote:7
This analysis in Nature from May 2017 [#1] states:
Here we present 90 mitochondrial genomes as well as genome-wide data sets from three individuals obtained from Egyptian mummies. The samples recovered from Middle Egypt span around 1,300 years of ancient Egyptian history from the New Kingdom to the Roman Period. Our analyses reveal that ancient Egyptians shared more ancestry with Near Easterners than present-day Egyptians, who received additional sub-Saharan admixture in more recent times.
This suggests to me that there is descendancy in modern Egyptians from Ancient Egyptians, but also considerable new admixture from sub-Saharan populations. Make of that what you will.
These are small sample sizes, likely of rather primitive technology compared to what might be possible in even just a few more years, and so must be regarded as tentative conclusions, but the best possible at this time.
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