Cytogenetics/Mutations Flashcards
t(12;21)
ETV6-RUNX1
Favourable cyto B-ALL
t(9;22)
BCR-ABL
Philadelphia Chromosome
Ph+ ALL, CML
t(17;19)
TCF3-HLF
very rare (<1%) B-ALL, very unfavourable
DIC and HyperCa
t(4;11)
t(11;19)
KMT2A-MLLT2 (50%)
KMT2A-MLLT2 (20%)
t(15;17)
PML-RARA
APML
t(8;21)
AML1-ETO (RUNX1-RUNX1T1)
AML favourable
CBFA2T3-GLIS2
RAM phenotype AML
FVL mutation
G1691A (APC resistance)
Prothrombin gene mutation
G20210A
Dx?
ankyrin, Band 3, b spectrin
HS (aut dom)
Dx?
a spectrin, protein 4.2
HS (aut rec)
Dx?
Spectrin or band 4.1
HE
aut dom
horizontal interactions
Dx?
stomatin or band 7.2 mutations
overhydrated hereditary stomatocytosis
aut dom
Dx?
PIEZO1 or KCNN4
Xerocytosis (hereditary stomatocytosis)
aut dom
Dx?
PIG-A gene (GP1 protein)
PNH
Dx?
TMPRSS6 mutation
IRIDA (iron refractory IDA)
hepcidin upregulation
t(12;15)
ETV-NTRK3
congenital mesoblastic nephroma
larotrectinib
ETV-NTRK3
t(12;15)
congenital mesoblastic nephroma
larotrectinib
LOH 1p and 16q
WT poor px features
HAX1
Kostmann disease (congenital neutropenia)
LYST (CHS1 gene)
Chediak-Higashi
- albanism
- immunodeficiency
+-bleeding, neuro degeneration
giant lysosomes in granulocytes
WAS gain of function
X linked neutropenia
CXCR4 mutation
WHIM: warts, hypogammaglobulinemia, infections, myelokathexis (retention of myeloid cells in bone marrow)
ELANE
severe congenital neutropenia
cyclic neutropenia
t(8;14)
t(2;8)
t(8;22)
Burkitt Lymphoma
MYC amplification
Burkitt lymphoma translocations
t(8;14) -80%
t(2;8) - 15%
t(8;22) - 5%
t(2;5)
t(1;2)
ALK-NPM
ALK-TPM3
ALCL
ALCL
t(2;5) ALK-NPM
t(1;2) ALK-TPM3
GpIb-IX-V = CD42
Bernard Soulier Syndrome
GpIIb-IIIa = CD41
Glanzmann’s thrombasthenia
CSF3R
GCSF receptor
Primary neutrophilia
MHY9 mutation
May Hegglin anomaly
inherited macrothrombocytopenias
Dohle bodies
renal failure, SNHL, cataracts
GATA1 mutation
TMD
X linked macrothrombocytopenia
NBEAL2 mutation
Gray Platelet syndrome
RBM8A mutation
TAR
c-MPL mutation
thrombopoietin receptor
CAMT
HOXA-11
RUSAT congenital thrombocytopenia
GLUT-1
infantile hemangioma
20% of angiosarcoma
PIK3CA
lymphatic anomalies
PIK3CA-related overgrowth spectrum (PROS)
RECQL4
Rothmund-Thompson
Osteosarcoma predisposition
t(11;22)
t(21;22)
Ewing Sarcoma
t(11;22) EWSR1-FLI1 (90%)
t(21;22) EWSR1-FUS
EWS translocations
Ewing Sarcoma
t(11;22) EWSR1-FLI1 (90%)
t(21;22) EWSR1-FUS
Desmoplastic small round cell tumor
t(11;22) EWSR1-WT1
Clear Cell Sarcoma of soft tissue
t(12;22) EWS-ATF1
EWSR1-CREB1
Angiomatoid fibrous histiocytoma
EWSR1-CREB1
EWSR1-ATF1
t(2;13)
t(1;13)
ARMS
t(2;13) PAX3-FOXO1 60%
t(1;13) PAX7-FOXO1 20%
t(X;17)
ASPSCR1-TFE3
alveolar soft part sarcoma
SMARCB1
malignant rhabdoid tumor
epithelioid sarcoma
ATRT
t(X;18)
SS18-SSX1 / 2 / 4
Synovial sarcoma
t(12;15)
ETV6-NTRK3
Congenital fibrosarcoma
t(2;19)
TPM4-ALK
inflammatory myofibroblastic tumor
t(1;3)
WWTR1-CAMTA1
epithelioid hemangioendothelioma
ETV6-NTRK3 fusion
infantile fibrosarcoma
congenital mesoblastic nephroma
NTRK-rearranged spindle cell neoplasm
breast cancer
RT induced papillary thyroid carcinoma
isochrome 12p
GCT type 2 (gonadal, AYA)
DCLRE1C
Artemis
T-B-NK+ SCID
BTK mutation
(bruton tyrosine kinase)
XLA
SH2D1A mutation
XLP1
SAP protein
BIRC4 mutation
XLP2
CHS1 mutation
Chediak Higashi
STAT3 or DOCK8 deficiency
hyper IgE syndrome
CD40L deficiency
hyper IgM syndrome
X linked
BRAF-KIAA1549 fusion
pilocytic astrocytoma
also V600E
BRAF mutations seen in:
pilocytic astrocytoma (BRAF-KIAA1549 and V600E)
craniopharyngioma
LCH (V600E)
LGG
HGG (GBM)
plexiform neurofibroma
Melanoma (V600E)
H3K27 mutation
H3K27me3
DIPG
HGG
IDH1 mutation
HGG
small round blue cell DDx
LEARN NMR:
lymphoma
Ewing
ALL
RMS
NBl
Neuroepithelioma
Medullo
retinoblastoma
ATRT
pineoblastoma
ETMRE (embryonal tumor with multilayered rosettes)
loss of INI-1
SMARCB1 mutation
malignant rhabdoid tumor
epithelioid sarcoma
ATRT
t(8;22) vs t(9;22)
t(8;22) Burkitt (8-B)
t(9;22) Ph (9:P)
t(Y;14)
IGH-CRLF2
Ph-like
MYC locus
8q24
B immunophenotype
CD10: common ALL Ag
CD19
CD20 (mature)
CD 22
CD79a
CD45 (hematopoetic)
Immature: HLA-DR, CD34
T immunophenotype
CD 2-8
CD10 (common ALL Ag)
CD45 (hematopoetic)
Immature: CD1a, CD99
Myeloid immunophenotype
CD13, 15,
MPO
Lysozyme
CD45 (hematopoetic)
Immature: CD117
t(5;14)
IL3-IGH
eosinophilic B-ALL
Eosinophilic B-ALL mutation
t(5;14) IL3-IGH
Ph-like classes
ABL-like
CRLF2-r (JAK)
Ras activating
T-ALL immunophenotype and common mutations
+ CD34, 10, TdT
- HLA-DR
TCR-r
del9p (CDKN2A)
NOTCH activating
ETP T-ALL immunophenotype
+ HLA-DR (compare to T-ALL), CD 34, 117, TdT
- CD 1, 5, 8, 10 (compare to T-ALL)
APML immunophenotype
+ bright CD33, intense MPO
- CD 10, 34 (not hypogranular subtype), HLA-DR (not hypogranular subtype)
HLA-DR negative leukemias
T-ALL (not ETP)
AMKL
APML (not hypogranular variant)
RAM phenotype