Access New Active Substance (NAS) Work Sharing Initiative The New Active Substance Work Sharing Initiative has successfully approved several medicines through this international collaboration and continues to foster cooperation and strong relationships between its Access partners. From: Contents Print this page By engaging in these partnerships, Access is able to co-ordinate regulatory review procedures, and increase each agency’s capacity to ensure consumers have timely access to high quality, safe and effective therapeutic products. Assessment procedure The applicant should first express interest in the initiative by using the Expression of Interest (EOI) form (MS Word Document, 123KB) to the relevant authorities. This should be done 3 - 6 months before the target submission date.