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    INDICATIONS

    SPRYCEL® (dasatinib) is indicated for the treatment of adult patients with:

    • Newly diagnosed Philadelphia chromosome-positive (Ph+) chronic myeloid leukemia (CML) in chronic phase
    • Chronic, accelerated, or myeloid or lymphoid blast phase Ph+ CML with resistance or intolerance to prior therapy including imatinib
    • Philadelphia chromosome-positive acute lymphoblastic leukemia (Ph+ ALL) with resistance or intolerance to prior therapy

    SPRYCEL® is indicated for the treatment of pediatric patients 1 year of age and older with:

    • Newly diagnosed Philadelphia chromosome-positive (Ph+) acute lymphoblastic leukemia (ALL) in combination with chemotherapy
    • Philadelphia chromosome-positive (Ph+) chronic myeloid leukemia (CML) in chronic phase

5-year follow-up results for patients who switched to SPRYCEL after not achieving early molecular response (EMR)* within 3 months of imatinib treatment1

DASCERN is not included in the US Prescribing Information. In the registrational trial of patients resistant or intolerant to imatinib with chronic phase Ph+ CML, the primary endpoint was major cytogenetic response (MCyR). MCyR combines both complete (0% Ph+ metaphases) and partial (>0%–35%) responses.

DASCERN Study Design
  • Phase IIb, randomized, open-label, multinational trial of adult patients (N=260) who failed to achieve EMR* after 3 months of treatment with first-line imatinib1
  • Patients were randomized 2:1 to switch to SPRYCEL® (dasatinib) 100 mg once daily (n=174) or continue imatinib ≥400 mg once or twice daily with option for dose escalation (n=86) ≤8 weeks after failure to achieve EMR1*
  • Of patients randomized to imatinib, 46 (53%) experienced subsequent treatment failure and switched to SPRYCEL1
  • The primary endpoint was major molecular response (MMR) at 1 year1
  • Select secondary endpoints included time to MMR or MR4,5, progression-free survival (PS), and overall survival (OS)1
Major Molecular Response (MMR) Rates at Year 1 and followed up in Year 5 show differentiation in SPRYCEL vs imatinib

The percentage of patients who achieved MMR at any time (95% CI) was 77% (70%-83%) vs 44.2% (33.5%-55.3%)(dasatinib vs imatinib, respectively)1

DASCERN (2L): Dasatinib vs imatinib in non-responders after 3 months of follow-up

Switching to dasatinib after suboptimal response to imatinib at 3 months impacted the likelihood of achieving MMR by 1.2x, compared with a later switch after treatment failure (95% CI, 1.1-1.3, P=0.0011)1

5-year results - Switching at 3 months from imatinib to SPRYCEL (DASCERN)
DASCERN's 5-year follow up cumulative incidence of MMR by ITT population

Median (95% CI) time to MMR was 13.9 (11.6-17.6) months with dasatinib vs 19.7 (14.2-26.4) months with imatinib. Among patients who failed imatinib and were switched to dasatinib, median time to MMR was 21.2 (7.6-37.7) months1

    • PFS at 60 months in the ITT population was 94% for both arms and 90% for patients randomized to imatinib who crossed over later to dasatinib
    • OS at 60 months in the ITT population was 96% and 95% in patients randomized to dasatinib and imatinib, respectively, and 94% in patients randomized to imatinib who crossed over later to dasatinib
Important Information about Adverse Reactions:
  • In the DASCERN trial:
    • Any-grade TEAEs occurred in 166 (97%) patients in the dasatinib group, 82 (95%) in the imatinib group, and 43 (93%) in the imatinib group after crossover to dasatinib. Serious TEAEs occurred in 95 (56%) patients in the dasatinib group, 50 (58%) in the imatinib group, and 26 (57%) in the imatinib group after crossover to dasatinib
    • The most common adverse reactions in the dasatinib group (≥15%)included: myelosuppression, headache, diarrhea, pleural effusion, upper respiratory tract infection, hypophosphatemia, pyrexia, and pneuomonia
  • In the registrational trial in adult patients resistant or intolerant to prior imatinib therapy:
    • Drug-related SARs were reported for 26.1% of SPRYCEL-treated patients treated at the recommended dose of 100 mg once daily in the randomized dose-optimization trial of patients with chronic phase CML resistant or intolerant to prior imatinib therapy. Serious adverse reactions reported in ≥5% of patients included pleural effusion (10%)
    • The most common adverse reactions (≥15%) included myelosuppression, fluid retention events, headache, diarrhea, fatigue, dyspnea, musculoskeletal pain, nausea, hemorrhage, and skin rash

Click here to see safety results for Ph+ CML patients resistant or intolerant to imatinib.

cCCyR=confirmed complete cytogenetic response; CI=confidence interval; CP=chronic phase; CML=chronic myeloid leukemia; ITT=intent-to-treat; SAR=serious adverse event; TEAE=treatment-emergent adverse event.

*EMR is defined as BCR::ABL1 ≤10% International Scale (IS).1

Time to MMR/MR4,5 was the time from randomization to first polymerase chain reaction confirmation of MMR/MR4,5 in all patients.

PFS was the time from randomization to transformation to accelerated phase or blast phase (CML-AP/BP) or death from any cause, whichever occurred first.1

§OS was the time from randomization to death.

Reference:

  1. Cortes JE, Jiang Q, Wang J, et al. Treatment of chronic-phase chronic myeloid leukemia in patients randomized to dasatinib or imatinib after suboptimal response to three months of imatinib therapy: final 5-year study results from DASCERN. Haematol. Published online May 2, 2024. doi:10.3324/haematol.2023.283428