PMID- 29903707 OWN - NLM STAT- MEDLINE DCOM- 20190416 LR - 20190416 IS - 2473-9537 (Electronic) IS - 2473-9529 (Print) IS - 2473-9529 (Linking) VI - 2 IP - 12 DP - 2018 Jun 26 TI - Valproate in combination with rituximab and CHOP as first-line therapy in diffuse large B-cell lymphoma (VALFRID). PG - 1386-1392 LID - 10.1182/bloodadvances.2018019240 [doi] AB - The aims of the present study were to establish the maximally tolerated dose (MTD) of the histone deacetylase inhibitor valproate together with R-CHOP (rituximab, cyclophosphamide, doxorubicin, vincristine, and prednisone) in patients with diffuse large B-cell lymphoma (DLBCL). A phase 1 dose escalation study of valproate together with R-CHOP followed by a dose expansion study using the established MTD of valproate was performed. MTD of valproate together with R-CHOP was established at 60 mg/kg per day, as higher doses resulted in auditory adverse events (AEs). In the study population, 2-year progression-free survival was 84.7% (95% confidence interval [CI], 73.2%-98%). The 2-year overall survival (OS) was 96.8% (n = 31; 95% CI, 90.8%-100%). These data were compared with 2 risk-factor matched populations of R-CHOP-treated patients from the Swedish Lymphoma Registry (cohort A, n = 330 and B, n = 165). As compared with the matched cohorts, we observed a statistically significant (P = .034 and 0.028, respectively) beneficial effect of the addition of valproate to R-CHOP on the OS in the studied population. In conclusion, addition of valproate to R-CHOP is a feasible strategy in first-line treatment of DLBCL. The proposed phase 2 dose is 60 mg/kg per day together with prednisone. Auditory AEs were unexpected and warrant close monitoring. Our findings suggest that drugs that target histone deacetylation may add benefit and are tolerable when combined with standard R-CHOP in DLBCL. The phase 1 trial was registered at www.clinicaltrials.gov as #NCT01622439. CI - (c) 2018 by The American Society of Hematology. FAU - Drott, Kristina AU - Drott K AD - Department of Oncology, Skane University Hospital, Lund, Sweden. FAU - Hagberg, Hans AU - Hagberg H AD - Department of Oncology, Akademiska, Uppsala University Hospital, Uppsala, Sweden; and. FAU - Papworth, Karin AU - Papworth K AD - Department of Oncology, Norrland University Hospital, Umea, Sweden. FAU - Relander, Thomas AU - Relander T AD - Department of Oncology, Skane University Hospital, Lund, Sweden. FAU - Jerkeman, Mats AU - Jerkeman M AD - Department of Oncology, Skane University Hospital, Lund, Sweden. LA - eng SI - ClinicalTrials.gov/NCT01622439 PT - Clinical Trial, Phase I PT - Clinical Trial, Phase II PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - United States TA - Blood Adv JT - Blood advances JID - 101698425 RN - 0 (Histone Deacetylase Inhibitors) RN - 4F4X42SYQ6 (Rituximab) RN - 5J49Q6B70F (Vincristine) RN - 614OI1Z5WI (Valproic Acid) RN - 80168379AG (Doxorubicin) RN - 8N3DW7272P (Cyclophosphamide) RN - VB0R961HZT (Prednisone) RN - CHOP protocol SB - IM MH - Aged MH - *Antineoplastic Combined Chemotherapy Protocols/therapeutic use MH - Cyclophosphamide/therapeutic use MH - Doxorubicin/therapeutic use MH - Female MH - Histone Deacetylase Inhibitors/therapeutic use MH - Humans MH - Lymphoma, Large B-Cell, Diffuse/*drug therapy MH - Male MH - Maximum Tolerated Dose MH - Middle Aged MH - Prednisone/therapeutic use MH - Rituximab/therapeutic use MH - Valproic Acid/administration & dosage/adverse effects/*therapeutic use MH - Vincristine/therapeutic use PMC - PMC6020808 COIS- Conflict-of-interest disclosure: K.D. is a shareholder and board member of Respiratorius AB., K.D., and M.J. have received honoraria from Roche. The remaining authors declare no competing financial interests. EDAT- 2018/06/16 06:00 MHDA- 2019/04/17 06:00 PMCR- 2018/06/14 CRDT- 2018/06/16 06:00 PHST- 2018/03/29 00:00 [received] PHST- 2018/05/02 00:00 [accepted] PHST- 2018/06/16 06:00 [entrez] PHST- 2018/06/16 06:00 [pubmed] PHST- 2019/04/17 06:00 [medline] PHST- 2018/06/14 00:00 [pmc-release] AID - bloodadvances.2018019240 [pii] AID - 2018/019240 [pii] AID - 10.1182/bloodadvances.2018019240 [doi] PST - ppublish SO - Blood Adv. 2018 Jun 26;2(12):1386-1392. doi: 10.1182/bloodadvances.2018019240.