Sarah Chamseddine

MD | Pediatrician via @ChildrensPgh | Allergy and Immunology @BostonChildrens | Ravenclaw | Struggling poet | Beirut

[Sarah Chamseddine @sera_chams]

Excited to share our review on Tfh cells in immune regulatory disorders!

[Journal of Allergy and Clinical Immunology @jacionline]

While T follicular helper (Tfh) cells are key to immunity, self-reactive Tfh cells can promote autoantibody production. Read a review on the role of Tfh cells in several primary immune regulatory disorders and their potential utility as disease biomarkers. https://t.co/CYrLc4PDHD

[Sarah Chamseddine @sera_chams]

Check out our recent paper on the use of cTfh subsets and autoantibody profiles as markers of immune dysregulation!

[Journal of Allergy and Clinical Immunology @jacionline]

Limited clinical tools exist for characterizing primary immune regulatory disorders. A study’s findings suggest that integrating CD4+ T-cell phenotyping and total burden of autoantibodies could enhance disease detection. Learn more. https://t.co/CFmVvGse5b

[Measles & Rubella Partnership @MeaslesRubella]

A reminder for this back-to-school season:

#Measles is one of the most contagious diseases in the world. So contagious that if an infected child walked into a classroom, EVERY unvaccinated child in that classroom will most certainly be infected as well.

https://t.co/CfGhUTTlmb

[Journal of Allergy and Clinical Immunology @jacionline]

What is the connection between different common viral pathogens and cytokine storm syndromes? New findings suggest that Epstein-Barr virus infection uniquely triggers high levels of multiple cytokines and chemokines. Here’s the Editors’ Choice paper. https://t.co/WmcRIai6YM

[Sarah Chamseddine @sera_chams]

Jammy is ready for some great learning at #CIS2025! @Info4PI

(Don’t mind the orange residue on his hands, he had a Philly Cheesesteak for breakfast!)

[Sarah Chamseddine @sera_chams]

@alice_recho @BostonChildrens @AUB_Lebanon Congrats Alice and welcome to Boston!

[Sarah Chamseddine @sera_chams]

Fascinating!

[UC San Francisco @UCSF]

Your lungs make blood too. UCSF scientists just discovered lung stem cells that produce blood, just like bone marrow. This could change how we treat blood and immune disorders. https://t.co/7k7L9iOmDj

[Mashreghi_Lab @Mashreghi_Lab]

Our latest study in @nature reveals how #TGFβ drives Epstein-Barr Virus (#EBV) reactivation in multisystem inflammatory syndrome in #children (#MISC, #PIMS) following #COVID19. @DRFZ_Berlin @Mashreghi_Lab #SARSCoV2 @ChariteBerlin
🔗 Read here: https://t.co/oUfpBpEXvD

[Sarah Chamseddine @sera_chams]

@OmranSaifi @MDAndersonNews @BouthainaDabaja @ChelseaPinnix @JillGunther @PennyFangMD @suwusan @MayoFL_RORes @AUB_Lebanon Congrats Omran! This is an amazing accomplishment!

[Sarah Chamseddine @sera_chams]

So now that I have watched @wickedmovie, there is a DEFINISH chance this will happen again.

[Sarah Chamseddine @sera_chams]

So I am at my desk glued to my screen watching Idina and Kristen belt out #DefyingGravity (and of course I was mouthing the words), and 5 minutes in I notice my attending standing next to me waiting to chat. Where is a flying broom when you need one 🥲

[Sarah Chamseddine @sera_chams]

@JoshFleitman I am obsessed!

[Sarah Chamseddine @sera_chams]

Needed this article in my life. Great review on all things JAK-STAT! @SimranKaurSamra

[Turvey lab @TurveyLab]

Our latest review is just out in @jacionline.

JAK-STAT signaling pathway, immunodeficiency, inflammation, immune dysregulation, and inborn errors of immunity - Journal of Allergy and Clinical Immunology https://t.co/pPx4nsO2aY

Written was a partnership between @UBC and @NIH.

[Sarah Chamseddine @sera_chams]

@JamesBowenMD @residentsofchp This was a great curriculum! Congrats 🎉

[Sarah Chamseddine @sera_chams]

@SCKimIBDMD @ClinImmSoc @Andrewwwp @EilafFallatah Haha love that!

[Sarah Chamseddine @sera_chams]

Below is an exhibit of naive T cells that just graduated from thymus school! @ClinImmSoc. @Andrewwwp @EilafFallatah

(Finally an excuse for me to use ALL the immuno metaphors my heart desires)

[Sarah Chamseddine @sera_chams]

Team 4 homing their way to the win! 🏆

[kate sullivan @katesullimmuno]

The ⁦@ClinImmSoc⁩ jeopardy winners! So many rewards

[ACAAI @ACAAI]

Neffy epinephrine nasal spray was approved by the FDA today. This provides the first epinephrine product for treatment of anaphylaxis that does not require an injection. Read the FDA announcement https://t.co/JqiVZS6K37

[Sarah Chamseddine @sera_chams]

@MajdMarrache @HopkinsOrtho @AUBMC_Official Congrats Majd and welcome to Boston!! What an adorable nugget! 😍

[Sarah Chamseddine @sera_chams]

@razan_el_sayed @USFsurgery @ProjectImg @Inside_TheMatch Mabrook Razan!

[Sarah Chamseddine @sera_chams]

@JoeKazan @carmen_andree @KarimH349 @JordanKarp1 @UTHealthHouston @uthpsychiatry Congrats!