fsvarn Profile Banner
Fred Varn Profile
Fred Varn

@fsvarn

Followers
360
Following
1K
Media
41
Statuses
521

Assistant Professor at @jacksonlab | Brain tumor microenvironment No longer active here. https://t.co/dQryRN49s9

Farmington, CT
Joined April 2009
Don't wanna be here? Send us removal request.
@fsvarn
Fred Varn
4 years
Latest work by the Glioma Longitudinal Analysis Consortium is out! We integrated genomic, pathology, and microscopy approaches to discover common molecular paths gliomas take following therapy. ➡️ @CellCellPress link: https://t.co/alhOZ1Ll1p A 🧵on what we learned (1/10):
14
77
256
@GliomaGenomics
Glioma Genomics Research Group
2 years
We are thrilled to have published our recent findings regarding the way that GBM tumours adapt to, and survive, treatment in @GenomeBiology. This brief thread highlights what we found: 1/8
2
15
56
@JAX_Education
JAX Genomic Education
2 years
It's Ph.D. application season! Ready for the next step in your scientific career? #PhDchat Learn more & apply for JAX's exceptional Ph.D. program in mammalian genetics, neuroscience, or biomedical sciences:
0
4
7
@fsvarn
Fred Varn
3 years
I want to thank my postdoctoral advisor, @roelverhaak, my PhD advisor, @chengchao12, the @JCCFund, as well as all my colleagues at JAX and in the brain tumor research community for their support. As a faculty, I plan to pay it forward
0
0
15
@fsvarn
Fred Varn
3 years
Today is officially my first day as an Assistant Professor at @jacksonlab in Farmington, CT. My lab will be applying genomic and pathology approaches to examine how the tumor microenvironment shapes evolution and treatment resistance in diffuse glioma
18
9
206
@GliomaGenomics
Glioma Genomics Research Group
3 years
We think we've found something v.interesting 🧐:IDHwt GBMs can be stratified by treatment response which might inform targeted therapies. Read our study here: https://t.co/VHp0numYEV Funded by @UKRI_News @BRUKresearch @DiMeN_Diversity @LDShospcharity @OscarsCharity @YorkshireBTC
0
17
66
@LucyFStead
Lucy Stead
3 years
We just published in Neuro-Oncology 🥳 GBMdeconvoluteR quantifies immune & neoplastic cells in bulk RNAseq of IDHwt GBM: https://t.co/i2mGyHXwjd. More research facilitated by @LeedsNeuroRTB funded by @YorkshireBTC and @OscarsCharity.
3
19
92
@fsvarn
Fred Varn
3 years
Congratulations to former summer student @Gordon_Y_Ye!
@JAX_Education
JAX Genomic Education
3 years
🎉 Congrats to @jacksonlab Summer Student alumni Emma Wade (left) & Gordon Ye (right) for being selected as 2023-24 Churchill Scholars! This competitive scholarship covers one year of master’s study at @ChurchillCol, a stipend and travel costs. Read more: https://t.co/GhuJ4SZEhT
0
0
1
@JAX_Education
JAX Genomic Education
3 years
🎉 Congrats to @jacksonlab Summer Student alumni Emma Wade (left) & Gordon Ye (right) for being selected as 2023-24 Churchill Scholars! This competitive scholarship covers one year of master’s study at @ChurchillCol, a stipend and travel costs. Read more: https://t.co/GhuJ4SZEhT
0
2
8
@GliomaGenomics
Glioma Genomics Research Group
3 years
We'd love to hear back from the community about GBMdeconvoluteR, our tool to infer relative proportions of cancer & TME cells from bulk GBM RNAseq data https://t.co/7J3ndWWpCv Made possible thanks to funding from @UKRI_News @YorkshireBTC @OscarsCharity @3DBioImaging @BNS_updates
1
9
37
@VarunVenkatara2
Varun Venkataramani
3 years
Very happy to share our latest manuscript @CellCellPress with you: https://t.co/SpzebU9RIM TL;DR: Glioblastomas are incurable brain tumors colonizing the entire brain. We overlay molecular and functional data to uncover a hijacking of neuronal mechanisms driving invasion.
10
104
434
@fsvarn
Fred Varn
3 years
Good morning
1
1
6
@fsvarn
Fred Varn
4 years
The Jane Coffin Childs Memorial Fund (@JCChildsFund) for helping fund this work; and finally, the patients and their families whose donations made this study possible (10/10)
0
0
5
@fsvarn
Fred Varn
4 years
Thanks for reading! It was an honor to work with so many great people on this project. I want to highlight @Kevin_C_Johnson, @JanMartinek1, @PaluckaLab, and the GLASS pathology team for their contributions; my mentor, @roelverhaak, and GLASS leadership for the guidance; (9/10)
1
0
8
@fsvarn
Fred Varn
4 years
To conclude, we integrate these cellular, histological, and genomic changes to group tumors into the three recurrence phenotypes we observe: Neuronal, Mesenchymal, and Proliferative. We believe this grouping offers a framework to help understand why gliomas recur (8/10)
1
0
4
@fsvarn
Fred Varn
4 years
In IDH-mutant tumors we did not observe as many changes in the microenvironment. Instead, these tumors were more proliferative at recurrence, with the largest changes occurring in tumors that acquired hypermutation and deletions of the cell cycle regulator CDKN2A (7/10)
1
0
4
@fsvarn
Fred Varn
4 years
At the same time, a subset of IDH-wild-type tumors took on a mesenchymal phenotype at recurrence. Within these tumors, the myeloid cells and tumor cells expressed several ligand-receptor pairs together suggestive of coordinated signaling interactions (6/10)
1
0
3
@fsvarn
Fred Varn
4 years
Recurrent IDH-wild-type tumors more frequently infiltrated into the normal brain, and their tumor cells up-regulated neuronal signaling programs consistent with “neuron-like” behavior. It's early but this suggests a role for neurons in driving glioma growth post-treatment (5/10)
1
0
3
@fsvarn
Fred Varn
4 years
Our main conclusion: The two major subtypes of diffuse glioma evolve in distinct manners, where IDH-wild-type tumors are driven by microenvironment interactions and IDH-mutant tumors evolve through genetic mechanisms (4/10)
1
0
3