Onco 1: Prostate Flashcards

1
Q

risk factors for prostate cancer

A
  • Black
  • immediate family hx
  • age
  • genetics:
    - BRCA-2 mutation
    - Lynch syndrome
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2
Q

prostate cancer screening

A
  • consider harm of dx and overtreatment (chance of false positive)
  • donโ€™t screen pts over 70 (5 year suvival rate is already so good)
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3
Q

presentation of localized prostate cancer

NOT locally invasive

A

asymptomatic

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4
Q

presentation of locally invasice prostate cancer

not localized

A

urinary s/s

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5
Q

presentation of advanced prostate cancer

A
  • back painn, cord compression
  • lower extremity edema
  • pathologic fractures
  • anemia
  • wt loss
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6
Q

prostate cancer prognosit factors

A
  • prostate speific antigen (PSA)
  • tumor size and exxtent
  • hostologic grade (gleason score)
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7
Q

PSA level indications

A
  • PSA > 10: 67% chance of prostate cancer
  • normlaly <4, though pts cna develop prostate cnacer even withnormla PSA levles
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8
Q

gleason socre

A

scores cancer cells
- score 1: nearly normal cells
- 5: high grade tumor

scores are added together
- total 2-4 less aggressive
- 7-10 more aggressive

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9
Q

T, N, M staging for tumors

A
  • T = tumor size
  • N = node (lymph)
    - NX: not assessed
    - N0: negative
    - N1:positive
  • M = metastass
    - M0: no metastases
    - M1: metastases
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10
Q

goal of prstate cnacer therapy for localized or locally invasive cancer

A
  • conrol disease and symptoms
  • decreased morbidity and mortality

curative

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11
Q

goal of prstate cnacer therapy for advanced or metastatic cancer

A
  • palliative
  • increased qol
  • prolonged survival
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12
Q

treatment for localized/locally invasive postate cancer and low risk for recurrence

A
  • observation
  • very low risk and expected survival >20 (or low risk and >10): surveillance and can consider radiaiton
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13
Q

treatment for localized/locally invasive postate cancer and intermediate risk for recurrence

A
  • 5-10 years expected survivail: observation or radiation
  • > 10 yrs: surgery or radiation
  • ADT is an option if pt also unfavorable
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14
Q

treatment for localized/locally invasive postate cancer and high and very high risk for recurrence

A
  • < 5 years AND asymp: observation or ADT or radiation
  • > 5 yrs OR symptomatic
    - radiation + ADT (+/- abiraterone in very high risk)
    - surgery + pelvic lymph node dissection (+/- radiation +/- ADT)
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15
Q

treatment for regional postate cancer

A
  • < 5 years AND asymp: observation or ADT
  • > 5 yrs OR symptomatic
    - radiation + ADT (+/- abiraterone in very high risk)
    - ADT +/- abiraterone
    - surgery + pelvic lymph node dissection (+/- radiation +/- ADT) in select pts
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16
Q

treatment for advanced postate cancer and castrate naive/sensitive

A
  • nonmetastatic: monitoring or ADT
  • metastatic: ADT plus one of the following
    - abiraterone
    - enzalutamide
    - apalutamide
    - docetaxel 6 cycles
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17
Q

treatment for advanced postate cancer and castrate resistant and recurrent (and non-metastatic)

A

ADT +
- PSADT >10 months: monitoring or other seocndary therapy*
- PSADT < 10 months: apalutamide, enzalutamide, darolutamide, or secondary therapy

PSADT (PSA doubling time)

*othersecondary therapy: first gen antiandrogen, cs, antiandrogen withdrawal, ketoconazole +hydrocortisone

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18
Q

casstrate resistant definition

A

serum < 50 but disease progresssion

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19
Q

treatment for advanced adenocarcinoma postate cancer and castrate resistant and metastatic

A
  • no prior docetaxel or hormone: aberaterone, docetaxel, enzalutamide
  • no prior docetaxel, prior hormone: docetaxel (olaparib if BRCA mutation)
  • prior docetaxel, no prior hormone: abieraterone, cabazitaxel, enzalutamide
  • prior docetxel, prior hormone: cabazitaxel, docetaxel rechallenge

second line is the oppossite you did for first line (chemo vs hormone)

  • Radium 223 INSTEAD of chemo if sympotatic bone metastaes
  • Sipulecel-T in spcial cases
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20
Q

treatment for advanced small cell or neuroendocrine postate cancer and castrate resistant and metastatic

A
  • chemo
    - cisplatin/etoposide
    - carboplatin/etoposide
    - docetaxel/carboplatin
    - cabazitaxel/carboplatin
  • supportive care

if unsure if small cell or adenocarcinoma, treat as adeno

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21
Q

secondary hormone therapies for the treatment of prostate cancer

A
  • second gen antiandrogen: only for M0 and PSADT < 10 months (except enzalutamide whcih you can use in M1 too)
  • androgenn metabolizm inhibitor (abiraterone): M1 only
  • other (M0 or M1)
    - first gen antiandrogen
    - CS: hydrocortisone, prednisone, dexamethasone
    - antiandrogen withdrawal
    - ketoconazole + hydrocortisone
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22
Q

Second gen anti-androgen agents

A
  • apalutamide
  • darolutamide
  • enzalutamide
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23
Q

first gen anti-androgen agents

A
  • nilutamide
  • flutamide
  • bicalutamdie
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24
Q

ADT

A

andrgeon deprivation therapy

  • surgical castration (has been replaced with medical)
  • medical castration: LHRH agonist OR LHRH antag
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25
Q

LHRH agonsit MOA

A
  1. mimic endogenous LHRH
  2. release LH, FSH
  3. long term LHRH agonism -> downregulation
  4. overall decrease in testosterone production
26
Q

gaol serum testosterone after treatmetn

A

<50 after a month

27
Q

LHRH agonist agents

A
  • goserelin
  • leuprolide
  • triptorelin
  • histerelin

dosing ranges form q1mo to q24mo depending on agent and dose

28
Q

acute LHRH agonist ADR

A
  • tumor flare: give antiandrogen before and for 2-4 weeks during LHRH agonist admin to reduce tuor falre
  • hot flash
  • ED
  • edema
  • gynecomasstia
  • inj site reaction
29
Q

long term LHRH agonist (and LHRH antag) ADR

A
  • osteoporosis: obtain a baseline dexa
  • clincal fracture
  • obestiy
  • inuslin resistance, increased risk of DM
  • CV events
  • HLD
30
Q

supportive care in prostate cancer

A
  • get that dexa scan at baseline adn yearly
  • Ca 1000-2000mg QD
  • Vit D 400-800 IU QD
31
Q

prevention of skeletal related events (SRE) and possible antiumor effect

A
  • zoledronic acid
  • denosumab
32
Q

preferred osteoporisis treatment in prostate cnacer pts

A

zoledronic acid

33
Q

androgen depreivation-induced bone loss in prostate cnacer treatment

A

denosumab

34
Q

LHRH antag MOA

A
  1. bind reversibly to LHRH receptors
  2. decrease in FSH and LH
  3. decrease in testosterone
35
Q

LHRH antag agents

A
  • degarelix Qmo
  • relugolix QD
36
Q

advantages of LHRH antags

A
  • fastser decrease in testoerone than agonits (goal levels at day 7 vs 28)
  • no tumor flare
37
Q

disadvantages of LHRH antag

A
  • cost
  • dosing schedule
38
Q

antiandrogen MOA

A
  • inhibit androgen reuptake and/or androgen binding in target tissues
  • competitive inhibitor for bidning fo dihydroxytestoerone adn testosterone
39
Q

antiandrogen first gen ADR

A
  • diarrhea
  • gynecomastia
  • elevated LFT
  • hot flash

monitor:
- LFT Qmo then periodically
- testpsterone, PSA
- pulmonary function (nilutamide only)

40
Q

combined androgen blockade

A
  • LHRH agonsit or antag + atiandrogen
  • associate diwth more ADR
  • per NCCN: no benefit over casstration alone

can consider after several months of not at goal

41
Q

prostate cancer: hormon therapy and relapse

A

most pts initially respond but almost all relapse 2-4 yrs after starting therapy
- tumor coposed of hormon independent cells
- tumor stimulated by extratesticular androgens which are intracellularly conerted to dihydroxytestosterone

42
Q

apalutamide ADR

A
  • fatigue
  • HTN
  • rash
  • sezures
  • nausea, diarrhea
  • arthralgias
  • fracutre risk
  • peripheral edema
  • seizures (super rare, but if it happens, dc): SPARTAN trial
43
Q

darolutamide admin

A

PO BID with food

renal dose adjust

44
Q

darolutamide ADR

A
  • fatigue
  • HTN
  • rash
  • no seziure risk (ARAMIS tiral)

better tolerated than apalutamide

44
Q

enzalutamide DDI

A
  • dose reduce if conmittant strong CYP2C8 inibitor
  • dose increase if conmitant strong CYP3A4 inducer
45
Q

enzalutamide ADR

A
  • diarrhea
  • fatigue
  • HA
  • myalgias
  • edema
  • increased seizure risk (AFFIRM trial)
46
Q

docetaxel MOA

A
  1. promote assembly of microtubules and inhibit depolymeraization of tubulin
  2. stabilize microtubules in cell
  3. inhibition of DNA, RNA, protein synthesis

cabazitaxel: similar MOA but has activity in docetaxel-resistant tumors

47
Q

docetaxel ADR

A
  • myelosuppression
  • alopecia
  • edema
  • peripheral neuropathy
  • hypersensitivyt reaction

caution in hepatic impairment

48
Q

abiraterone MOA

A

inhibit CYP17 (required for biosynthesis)

49
Q

abiraterone ADR

A
  • diarrhea
  • edema
  • hypoK
  • HTN
  • hepatotox
  • hyperTG
  • mineralocorticoid exess: give with prednisone

monitor: K, phosphate, BP, LFTs Qmo

50
Q

olaparib MOA

A

inhibit ADP-ribose and PARP (aid in DNA repair)

51
Q

olaparib ADR

A
  • N/V/D
  • fatigue
  • anemia
  • neutro and leukopenia
  • abdominal pain
  • URI
  • increased risk of developing secondary cancer (myelodysplastic syndrome and AML)

monitor blood counts, SCr, s/s of pneumonitis

52
Q

Radium 223 MOA

A
  1. alpha particle release
  2. dsDNA breakdwonn
  3. antitumor effect on bone metases
53
Q

Radium 223 ADR

A
  • peripheral edema
  • nuasea
  • myelosuppression
54
Q

Sipuleucel-T MOA

A
  • dentritic cell vaccine
  • enahnces T cell response to prostate acid phosphatase (PAP)
55
Q

Sipuleucel-T admin

A

Q2W for 3 doses

56
Q

Sipuleucel-T ADR

A
  • infusion reaction
  • chills, fever
  • faiuge
  • HA
57
Q

Sipuleucel-T use

A

only in castrate resistant metastatic (but NOT liver metastases) who are asymp

58
Q

cabazitaxel ADR

A
  • febrile neutropeni
  • hypersensitivity reaction
  • mucositis
  • edema
59
Q

lutetium 177 usage

A

only in PMSA (+) M1 castrate resistant prostate cancer as a second line agent

60
Q

lutetium 177 admin

A

IV Q6W for 6 doses

61
Q

lutetium 177 ADR

A
  • fatigue
  • dry mouth
  • nausea
  • myelosuppression