29 Background: EP-CTs investigate novel therapeutic approaches for patients with cancer, but little is known about the utilization of supportive care services, specifically palliative care (PC), in this population. Methods: We conducted a retrospective review of consecutive patients enrolled on EP-CTs at the MGH Cancer Center from 2017-2019. Sociodemographic and clinical variables, including utilization of PC services, were obtained via chart review. Details of the PC evaluation were compared between patients who received first referral to PC while enrolled on an EP-CT versus those who received a PC referral at any point after diagnosis. Results: Among 426 patients enrolled on EP-CTs (median age 63 years; 44% male), 249 (59%) received a PC referral at any time following a diagnosis of cancer (median age 57 years, 58% male). Eighty-six (35%) were referred prior to enrollment on EP-CT, 44 (18%) were referred while on EP-CT, and 119 (48%) were referred post-EP-CT. Patients referred on EP-CT were younger (median 56 vs 63 years, p < 0.0001) than those enrolled on EP-CTs. For patients referred while on EP-CT, 48% had a PC consult within 30 days of enrollment (range: 0-530 days); median number of PC visits was 3 (range: 0-37); median time from first PC consult to death or termination of EP-CT was 32 days (range: 1-213). Of 44 patients referred on EP-CT, 2 (5%) died while on EP-CT. Of the remaining patients, median time from first PC consult to date of death was 79 days (IQR: 45-178 days). Most common reasons for referral included pain (22, 50%), non-pain symptoms (21, 48%), and goals of care/advanced care planning (20, 45%). Of these referrals, 13 (30%) were initiated as inpatients versus 31 (70%) as outpatients. Pain was most commonly cited for outpatient referral (35%), followed by non-pain symptoms (25%) and goals of care (23%). Non-pain symptoms (40%) and goals of care (36%) were most commonly cited reasons for inpatient referral, followed by pain (24%). Of referrals while on EP-CT, 23 (52%) were made by EP-CT staff, including MD and APP, 7 (16%) from the primary oncologist, and 1 (2%) was self-referral. 26 (57%) of patients referred to PC during trial were also referred to hospice, with a median time from last PC consult to hospice referral of 24 days (range: -2-322). Conclusions: A majority of patients with advanced cancer enrolled on EP-CTs received a PC referral. The timeline and method of referral varied, but most patients did not receive a referral until or following enrollment on an EP-CT. Future work will focus on developing a standard referral protocol for patients enrolled on EP-CTs.
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