525 Background: Chemotherapy induced alopecia (CIA) is a distressing side effect for women with breast cancer (BC) undergoing chemotherapy (CT). Scalp cooling is a method aiming to prevent CIA, but its efficacy is not well defined. Observational studies show a positive effect of scalp cooling to reduce hair loss, but randomized trials until recently have been lacking. Methods: In our monocentric prospective randomized trial patients with early BC undergoing (neo)adjuvant CT were 1:1 randomized to either scalp cooling (CAP) or not (noCAP). All patients received 18 to 24 weeks of anthracycline (A) and/or taxane (T)-based CT. The DigniCap System was used for scalp cooling. The primary endpoint was patient reported rate of alopecia according to the Dean Scale (Grade 0: no hair loss, grade 1: > 0 - 25%; grade 2: > 25 - 50%; grade 3: > 50 - 75%; grade 4: > 75%). Hair preservation was defined as hair loss £ grade 2. Secondary endpoints were rate of alopecia determined by nursing staff and an independent and blinded evaluator, rate of wig/scarf use as well as quality of life. Results: From August 2014 until January 2016 seventy-nine patients were included (41 CAP and 38 noCAP). The drop-out rate was 32% in the CAP arm and 34% in the noCAP arm. Main reasons for drop out were hair loss, adverse events (CAP) and randomization into control arm. At the time of this analysis all patients had completed CT. Hair preservation was observed in 39% of patients in the CAP arm versus 0% in the No CAP arm (p < 0.001). There was a strong concordance between patients and staff evaluation (weighted Cohen's Kappa = 0.92). Wig/scarf use was significantly less frequent in the CAP group (36% vs 92% at home, p < 0.001; 64% vs 91% outside, p < 0.001). We did not observe any differences in hair preservation between A-based and non A-based regimens. Conclusions: Our prospective randomized trial shows that scalp cooling is effective in preventing CIA in a relevant number of patients. This option should be made available for patients undergoing T+/-A-based (neo)adjuvant chemotherapy for EBC.
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