Xavier Deschênes-Simard, MD-CM, PhD, FRCPC
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xavierdessim.bsky.social
Xavier Deschênes-Simard, MD-CM, PhD, FRCPC
@xavierdessim.bsky.social
Hematologist @chumontreal.bsky.social and Investigator @crchum.bsky.social | Lymphoma and cell therapy specialist | Alumnus @mskcancercenter.bsky.social and @mcgill.ca.
Happy to share this large collaborative work in its final form : Liso-cel vs Axi-cel — similar efficacy with less toxicity.

doi.org/10.1182/bloo...

#lymsm #CARTCell
November 11, 2025 at 2:56 PM
Cyclophosphamide mitigates non-ICANS neurotoxicities following ciltacabtagene autoleucel treatment url:https://ashpublications.org/blood/article-abstract/145/23/2788/536434/Cyclophosphamide-mitigates-non-ICANS
June 18, 2025 at 3:24 AM
Reposted by Xavier Deschênes-Simard, MD-CM, PhD, FRCPC
Higher ORR and CR rate in less heavily pretreated patients suggest that this regimen, as an earlier treatment, may improve outcomes. buff.ly/bi4dpzR #hemesky #clinicaltrialsandobservations
April 14, 2025 at 3:05 PM
I usually refrain from sharing political views on these platforms, as I prefer to focus on scientific advancements. However, today I see it as an educational opportunity. I’m not sure everyone south of the border fully realizes the impact this is having and will continue to have for years to come.
Must watch war speech by Justin Trudeau.

Few outside of Canada understand our combination of civility, empathy and steel in our spine - this speech explains all that.

Not a foul word spoken. Not one inch of retreat.

Long Live Canada
Vive Le Canada

#ElbowsUp

www.youtube.com/watch?v=83f4...
FULL SPEECH | Trudeau outlines response to U.S. tariffs
YouTube video by CBC News
www.youtube.com
March 4, 2025 at 11:07 PM
🌴#Tandem25, Thursday @ 6:45pm🍍
Hyperferritinemia syndromes following CD19 CAR T cells for Lymphoma
- Hyperferritinemia (HF) = inferior survival.
- HF = greater toxicity.
- HLH-like manifestations in 28% of patients.
- Impact of HF independent of CRS, ICANS, and tumor burden.
#lymsm, #CARTCell
February 12, 2025 at 8:39 AM
Reposted by Xavier Deschênes-Simard, MD-CM, PhD, FRCPC
Nice work by one of our @mskcancercenter.bsky.social BMT fellows Moataz Ellithi on Neurotoxicity and Rare Adverse Events in BCMA-Directed #CARTCells: Real-World FAERS Data - Now out in @astct.bsky.social journal #mmsm www.astctjournal.org/article/S266...
DEFINE_ME
www.astctjournal.org
December 13, 2024 at 4:42 AM
Excellent presentation by Dr. Sehn on Tafa-R2 in relapsed/refractory follicular lymphoma at #ASH2024. InMIND: ''adding tafasitamab to R2 resulted in a 57% reduction in the risk of progression, relapse, or death''.
Tafa +/- R² RCT #ASH24 LBA
- 548 pts, 32% POD24, 55% 1 prior LOT
- superior PFS w/ tafa, including POD24
- look at that tafa TTNT curve!
- slightly more tafa & len d/c in tafa arm
- more PD deaths in pbo arm
OS analysis planned at 5 yrs, trend towards tafa. #lymsm
December 10, 2024 at 4:06 PM
Reposted by Xavier Deschênes-Simard, MD-CM, PhD, FRCPC
Liso-cel demonstrated safety and efficacy outcomes that were comparable to those in the pivotal TRANSFORM and PILOT trials in patients with relapsed/refractory large B-cell lymphoma. #lymsm #ash24 #CARTcells

www.onclive.com/view/liso-ce...
Liso-Cel Shows Broad Spectrum Activity in CIBMTR Cohort of Relapsed/Refractory LBCL
Liso-cel demonstrated safety and efficacy outcomes that were comparable to those in the pivotal TRANSFORM and PILOT trials in patients with relapsed/refractory large B-cell lymphoma.
www.onclive.com
December 9, 2024 at 3:58 AM
Reposted by Xavier Deschênes-Simard, MD-CM, PhD, FRCPC
Overall response rate (ORR) of 100%! Now with long term data showing 5-yr-Progression Free Survival (PFS) of 91%.

Neither Pembro nor GVD alone is as efficacious, begging the mechanistic question of “synergy” - that is, how do immunotherapy and chemotherapy combine to become more than either alone?
Excellent data with PEMBRO-GVD in relapsed #Hodgkin lymphoma in study by @mskcancercenter.bsky.social Alison Moskowitz - she will present additional data tomorrow #ash24 #lymsm
December 7, 2024 at 11:37 PM
🩸#ASH24 Sunday @ 6pm🩸
Real-world comparison of CD19 CAR T cells for LBCL.
- 501 patients from 4 centers.
- Inferior outcomes with tisa-cel.
- Higher ORR and CR rates with liso-cel.
- Liso-cel and axi-cel = similar PFS and OS rates.
- Less toxicities with liso-cell.
#lymsm, #CARTCell
December 6, 2024 at 1:12 PM
Reposted by Xavier Deschênes-Simard, MD-CM, PhD, FRCPC
Come and check out @mskcancercenter.bsky.social Kai Rejeski's talk on #CARTcells toxicity #ASH24
👉 In CAR-TOGRAPHY we graded >32,500 pt days across 4 sites in 902 CAR-T recipients, yielding >125,000 unique toxicity datapoints.
👉 Develop new metrics to describe early toxicity: CTI & tox phenotypes
December 5, 2024 at 4:26 PM
🩸#ASH24 Sunday @ 12:15pm🩸
Point-of-care vs commercial CD19 CAR-T therapies.
- Median vein-to-vein time: POC=11d, axi-cel=38d, tisa-cel=44d.
- Grade 2+ CRS: POC=26%, axi-cel=52%, tisa-cel=37%.
- Comparable survival outcomes.
#lymsm, #CARTCell
December 5, 2024 at 8:05 PM
! Hot off the press !
Excited to share this interesting case of long-term axi-cel persistence and to brainstorm about the role of immune checkpoint inhibitors in CAR T-cell therapies.
doi.org/10.1080/1042...

#lymphoidneoplasia, #CART, #Immunotherapy
December 4, 2024 at 4:28 PM
I am happy to share our new article in
@BloodJournal
. Acute myelopathy is a rare but devastating complication of CAR T-cell therapy: authors.elsevier.com/a/1k5wW1UYwn...

#CART #CellTherapy #Lymphoma #All
December 4, 2024 at 4:26 PM