ALL Flashcards
What is the immunophenotype of B-cell ALL?
CD19+, CD79+, CD22+
Usually positive: CD10, surface CD22, PAX5, and TdT
CD20 and Cd34 is variable
What is the immunophenotype of T-cell ALL?
TdT+, CD3+, CD7+
Often Cd1a+, CD4+, CD8+
What is the immunophenotype of early T-cell ALL?
CD7+, but CD8-, CD1a-
CD34+, CD117+, HLA-DR+, CD33+, CD13+
Early T precursor ALL has what prognosis?
More treatment resistant
What supportive care medication should not be used with vincristine based chemotherapy regimens because it exacerbates neurotoxicity?
Azoles like posaconazole and voriconazole
What is the mechanism of Inotozumab ozogamicin?
CD22 Ab-drug conjugate
What is the mechanism of Blinatumumab?
CD19 BiTE
Four unique toxicities of asparaginase?
Thrombosis
pancreatitis
hepatitis
anhedonia
Unique toxicities (2) of inotuzumab ozogamicin
Hepatotoxic
VOD/SOS
You see a patient with ALL treated with POMP. They have severe, profound cytopenias greater than what they experienced with induction chemo. Why?
TMPT polymorphism, meaning they can’t metabolize 6-MP well
You see patient with Ph- ALL who is MRD+ after induction chemotherapy. What is treatment of choice?
Blinatumomab
What is the preferred induction chemotherapy for younger adults with Ph-negative ALL?
CALGB 10403: Vincristine, daunorubicin, Prednisone, peg-asparaginase with IT MTX and cytarabine
What is the preferred induction chemotherapy for older adults with Ph-negative ALL?
Mini hyperCVAD + Inotuzumab
(Cyclophosphamide, Vincristine, Dex alternating with MTX and cytarabine) No daunorubicin
Preferred induction chemotherapy for T-ALL?
Nelarabine + cyclophosphamide and methotrexate
Preferred induction treatment for fit patient with Ph+ B-ALL?
HyperCVAD + Dasatinib or Ponatinib
Then alloHCT in CR1
Preferred induction treatment for older patient with Ph+ B-ALL?
TKI + Blinatumomab
What is Ph-like ALL?
Similar gene expression to BCR/ABL+ ALL but it doesn’t have the BCR/ABL fusion protein
Associated with poor clinical outcomes
4 treatment options for relapsed/refractory B-ALL?
Blinatumomab
Inotuzumab ozogamicin
CAR-T (Brexucabtagene)
Salvage chemo (not very good)
–Used as a bridge to alloHCT
Treatment for relapsed T-ALL?
Nelarabine (if not used in front line). Only FDA approved agent
Venetoclax + chemo
Bortezomib?
What two genetic changes is commonly seen in Ph-like ALL?
CRLF2 overexpression
ABL1 fusions
How do we treat Ph-like ALL with ABL1 or PDGFRB translocations?
BCR/ABL TKIs
What is the preferred maintenance therapy for adults with ALL?
POMP x2-3 years
6-MP, MTX, VCR, steroids
patient with Ph+ ALL treated with hyperCVAD+ponatinib and is now in MRD- CR1. What now?
Allo SCT
What BCR/ABL mutation confers resistance to imatinib or dasatinib?
T315I
Teratment for Ph+ ALL that has T315I mutation?
Ponatinib
What cytogenetic changes are sen in Burkitt like ALL?
t)8;14)
t(8;2)
t(8;22)
Induction treatment for Burkitt like ALL?
R-HyperCVAD or DA R-EPOCH with no maintenance
Who should get alloHCT in ALL?
ALL with t(11q23)
Precursor T-ALL
Complex karyotype
Ph-negative B-ALL with t(12;21) ETV6-RUNX1 translocation confers what prognosis?
Good prognosis
What maintenance therapy should be given to patients with Burkitt leukemia?
None
Consolidation treatment options (4) for Ph+ ALL who obtain a MRD- CR after induction
Chemo+TKI
TKI alone
Blina + TKI
Allo HCT
What are poor risk cytogenetic/molecular groups in ALL? (11)
Hypodiploidy
TP53mut
KMT2A rearranged (t)4;11))
IgH rearranged
HLF rearranged
ZNF384 rearranged
MEF2D rearranged
MYC rearranged
PAX5alt
Complex karyotype
For patients with Ph+ B-ALL and are MRD negative after induction, who shouldn’t go to alloHCT?
Younger patients (<21)
How do you manage a patient with clinical pancreatitis from pegasparaginase?
permanently discontinue pegasparaginase
What is the difference in ALL indication for Brexucabtagene autoleucel and Tisagenleucleucel?
Brexa: Approved for adults
Tisa: Approved for patients <26 years old
Management of a patient with ALL with isolated extramedullary relapse? (4)
Blina
Ino
Brexucabtagene autoleucel
Combination chemotherapy
–This is a harbinger of BM recurrence, so local therapy alone isn’t good enough
Management of a patient with ALL with residual testicular mass after completing induction chemotherapy?
Testicular RT
Treatment of T-LGL
Immunosuppression
Cyclophosphamide, MTX, cyclosporine