In 1999, Denise bought a life insurance policy on her life, naming her daughter Katlyn as the beneficiary of the $500,000 policy, but retaining the usual incidents of ownership over the policy. In January of 2011, when the policy's interpolated terminal reserve was worth $100,000 (i.e., its fair market value) Denise transferred all her incidents of ownership in the policy irrevocably to Katlyn, and paid $30,000 in gift tax. Thereafter in June, Katlyn took a loan out from the policy; she borrowed the cash surrender value and used the proceeds to buy Risky Inc. stock. In January of 2013, Denise suddenly died, when the value of the Risky Inc. stock was worth $650,000. 

How much, if anything, is included in Denise's gross estate as a result of these transactions?