Apex domains cannot have CNAME records.
Question and response
Question
dig breastcancerresearchsite.com. NS
Answer
breastcancerresearchsite.com. 5 NS ns-812.awsdns-37.net.
breastcancerresearchsite.com. 5 NS ns-973.awsdns-57.net.
breastcancerresearchsite.com. 5 NS ns-1010.awsdns-62.net.
breastcancerresearchsite.com. 5 NS ns-31.awsdns-03.com.
Authority
The response has no authority records.
Additional
. 0 OPT ; payload 1232, xrcode 0, version 0, flags 0