@TumorBoardTues 1/17 #TumorBoardTuesday #LungCancer #OncTwitter

42yo 👨🏽‍💼
PMH: never smoker
persistent cough

🩻PET/CT: 3.5 cm mass LLL & bulky, coalescing LNs in L hilum & mediastinum (AP 🪟, subcarinal, bilat paratracheal, supraclav)
Axillary LNs
🦴multi bony mets
🫀small pericardial effusion
@TumorBoardTues 2/17 #TumorBoardTuesday #LungCancer #NSCLC

🫁🎥Mediastinoscopy shows adenocarcinoma with signet rings.
🔬 ALK IHC positive
🐟 FISH positive
🧬 PDL1 = 0

🤨What’s your recommended initial therapy:
@TumorBoardTues 3/17 #TumorBoardTuesday #LCSM

🧲MRI: Brain shows 4 CNS mets in frontal lobes & cerebellum
📏 = 13, 10, 8 and 4 mm
💧No edema
🧠 no neuro symptoms

🤨 Does the presence of CNS mets change your 1st line recommendation?
A = alectinib
B = brigatinib
L = lorlatinib
@TumorBoardTues 4/17 #TumorBoardTuesday
Plot twist!
👨🏽‍💼seen when criz only 1L ALK TKI avail
👉🏽got WBRT (criz poor CNS penetration)
👨🏽‍💼treated with criz 250mg BID
👍🏽initial response in all sites➡️multifocal 🧠progress after 14 mo
👨🏽‍💼2L alectinib 600mg BID➡️good response
📚pubmed.ncbi.nlm.nih.gov/27863201/
@TumorBoardTues 5/17 #TumorBoardTuesday
👩🏻‍⚕️Mini tweetorial 1

📌ALK NSCLC

✅Occur in 5% of #NSCLC, primarily adenocarcinoma
✅More common in non-smokers, younger patients
✅About 30% with brain mets at the time of diagnosis
📚 pubmed.ncbi.nlm.nih.gov/23401436/
📚 pubmed.ncbi.nlm.nih.gov/36257531/
@TumorBoardTues 6/17 #TumorBoardTuesday
👩🏻‍⚕️ Mini tweetorial 2

📌ALK #NSCLC
What’s best diagnostic?

🧪‘Break apart’ FISH assay is gold standard, but requires ⬆️expertise to interpret
🧪IHC is now ✅ equivalent to 🐟
🔹IHC recommended in latest CAP/IASLC/AMP guidelines as 🐟 alternative
@TumorBoardTues @ALKLungCancer @EricBernicker @MurryWynes @JessicaJLinMD @StephenVLiu @n8pennell @HenningWillers @oncoOuLungCA @CharuAggarwalMD @MLadanyi 7/17 #TumorBoardTuesday
👩🏻‍⚕️ Mini tweetorial 3
📌ALK NSCLC
NGS also🏆at dx ALK, esp if using RNA assay
🤔No DNA 🧪can ✔️ all possible breakpoints
💡RNA coding elements <2% ALK gene➡️can be covered 💯
RNA 🧪can🔎all variants regardless of fusion partner
📚 tinyurl.com/yefw7ndz
@TumorBoardTues @ALKLungCancer @EricBernicker @MurryWynes @JessicaJLinMD @StephenVLiu @n8pennell @HenningWillers @oncoOuLungCA @CharuAggarwalMD @MLadanyi 8/17 #TumorBoardTuesday #LCSM
👩🏻‍⚕️ Mini tweetorial 4
📌ALK treatment
📍Proof of concept🎯w/multi-kinase crizotinib
📍Next specific 2nd-gen ALK TKIs 🛬
📍1st up: ceritinib. Not freq used (⬆️tox)
✨ASCEND4: 1L cerit v plat doublet chemo: med PFS 17 v 8 mo
📚tinyurl.com/4wewx78c
@TumorBoardTues @ALKLungCancer @EricBernicker @MurryWynes @JessicaJLinMD @StephenVLiu @n8pennell @HenningWillers @oncoOuLungCA @CharuAggarwalMD @MLadanyi @bensolomon1 @CoreyLangerMD @RamalingamMD @triparnasen @HwakeleeMD @JulieBrahmer @NarjustFlorezMD @HosseinBorghaei @benlevylungdoc @BrendonStilesMD 9/17 #TumorBoardTuesday
👩🏻‍⚕️Mini tweetorial 5

ALK treatment
📌Alectinib
✅well tolerated
✅👍🏽 CNS activity

✨ALEX trial: 1L alec v criz: med PFS 35 v 11 mo
Med OS still NR; 5yr landmark OS: 63% v 46%
⚡️CNS protection marked⚡️
📚@peters_solange NEJM 2017
📚@tonymok9 AnnOnc 2020

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More from @LeciaSequist

Jun 7, 2020
@LauraJBook Thanks for your help @LauraJBook. This is a commentary on the article by @AdamJSchoenfeld by my colleague @ZPiotrowskaMD. I think pts can’t see the full articles & are misinterpreting the abstract. Let me see if I can shed some light on this 1/n
@LauraJBook @AdamJSchoenfeld @ZPiotrowskaMD To start with, SCLC transformation is still poorly understood. So we don’t have all the answers yet. From some brilliant work from @jakelee0711 we suspect that certain EGFR pts are predisposed to have this transformation and for others, it will not ever happen 2/n
@LauraJBook @AdamJSchoenfeld @ZPiotrowskaMD @jakelee0711 The highest risk group IMO are those that have RB1 loss along with their EGFR mutation. TP53 also seems to have some risk but TP53 mutations are VERY COMMON and most pts will not transform. In my practice, i focus my clinical radar (“spidey sense” per @DrCBest) on the RB1 pts 3/n
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