Hematologic Disease Leukemias Flashcards
What is Chronic Myeloid Leukemia?
- Unregulated Myeloid proliferation of excess mature neutrophil [cell grow and dont die]
- Philadelphia chromosome = Bcr/Abl
What is the Phiadelphia Chromosome in Chronic Myeloid Leukemia?
- Break in chromosome 9 & 22 = Bcr/Abl
What are some of the risk factors in Chronic Myeloid Leukemia?
- No known risks
What is the presentation of Chronic Myeloid Leukemia?
- Find out by accident
- Fatigue, Sweating, Bone Pain, Weight Loss
- Full Faster
- Leukocytosis
What is Leukocytosis?
- MEDICAL EMERGENCY!!
- 1,000,000 cells/mm3
- Risk of Leukostasis = Thick Blood
What is the Diagnosis for Chronic Myeloid Leukemia?
- Bone Marrow Biopsy
- FISH or PCR
What is the difference between FISH and PCR in Chronic Myeloid Leukemia ?
- PCR = selected segment [more sensitive]
- FISH = detects a specific DNA sequence
What are the phases of Chronic Myeloid Leukemia?
- Chronic Phase: <10% blasts [immature cells]
- Accelerated Phase: 10-19% blasts
- Blast Crisis: >20% blasts; terminal stage
What is the treatment for Chronic Myeloid Leukemia?
- NO TREATMENT; FATAL IN 5 YEARS
- Goal: lower leukemic clone with Tyrosine Kinase Inhibitors
What is important to know about the Treatment Response Criteria for Chronic Myeloid Leukemia?
- Want the molecular response to be DEEP: BCR-ABL < 0.01%
What is the main TKI that is used in Chronic Myeloid Leukemia and what trial showed it effetiveness?
- Imatinib
- IRIS trial [everyone was either on or swtiched to it]
What is important to know about the Adverse effects from Imatinib within Chronic Myeloid Leukemia?
- Neutropenia, Thrombocytopenia, Anemia [all subside within 4 years]
What are the 2nd generation TKIs that are used in Chronic Myeloid Leukemia?
- Dasatinib, Nilotinib, Bosutinib
- Approved as 1st line
- Really only used when Imatinib cant be used
What is important to know about Imatinib?
- Daily
- 3A4
- NAUSEA
What is important to know about Dasatinib?
- Daily [avoid acid reducers]
- 3A4
- Fluid retention
What is important about Nilotinib?
- BID [Empty Stomach]
- 3A4
- QTc Prolongation, Metaboic Syndrome
What is important about Bosutinib?
- Daily
- 3A4
- DIARRHEA
What is important about Ponatinib?
- Daily
- 3A4
- ISCHEMIC REACTIONS, HYPERTENSION
- Works with T315I resistance
What is the most common resistance that is found in Chronic Myeloid Leukemia and how is it formed?
- T315I
- Overexpression; Mutated kinase domains; gene alterations`
What is the treatment summary of Chronic Myeloid Leukemia?
- Start: Imatinib
- Then: Dasatinib, Niloinib, Bosutinib
- T315I: Ponatinib, Asciminib [NEW]
- NO mutation: Stem Cell Transplant
Give a brief summary for Chronic Myeloid Leukemia?
- Caused by BCR-ABL [Philadelphia Chromosome; 9 & 22]
- Three Phases: Chronic, Accelerated, Blast Crisis
- TKIs!!!! based on patient and resistanceq