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David Sher

@DavidSherMD

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"Ultimately, the secret of quality is love. You have to love your patient, you to have to love your profession, you have to love your G-d." Avedis Donabedian

Dallas, TX
Joined April 2019
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@DavidSherMD
David Sher
2 days
RT @FadenLab: @DavidSherMD Re: impact of more sensitive NGS assays. We agree. Preliminary results from our Clear-HPVca Trial (NCT NCT067304….
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@DavidSherMD
David Sher
2 days
RT @FadenLab: @DavidSherMD See our commentary on Routman et al here: . @JAMAOto.
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@DavidSherMD
David Sher
2 days
RT @DanielMaMD: DART 2, which was based upon this work, should finish accrual Q2 2026, so more data on ctDNA-personalized de-escalation wi….
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@DavidSherMD
David Sher
3 days
This is very nice work and has important implications for the use of NavDX (ctHPVDNA by ddPCR) to determine postoperative treatment. During the Mayo DART trial, ctDNA was drawn a median of 22 days after surgery, with 17/140 (12.1%) positive. ALL of these patients then received.
@JAMAOto
JAMA Otolaryngology – Head & Neck Surgery
3 days
Patients who are post-op minimal residual disease (MRD)+ are at a higher risk of recurrence; MRD status approximately 2-3 weeks post-op may be useful in addition to pathologic factors to select patient candidacy for de-escalation. @LindaXYinMD
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@DavidSherMD
David Sher
12 days
Very thoughtful take in this article. One additional comment: if there is any one discipline in US radiation oncology that is disappearing over the next 5 years, it is the dosimetrist/treatment planner. Auto-planning will essentially render this position close to obsolete, with.
@MWeismanMD
Michael Weisman
13 days
#radonc. Thanks to Dr. Chhabra, and team for spearheading this important discussion. And thanks to the usual suspects that speak up for the health of the field and young doctors. @DrChowdharyMD, @CShahMD, @JamesBatesMD.
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@DavidSherMD
David Sher
26 days
RT @giuliani_luiza: Excited to share our latest work in Advances in Radiation Oncology! 🚀. We compared outcomes of 5-fraction adaptive MRI-….
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@DavidSherMD
David Sher
29 days
RT @JJCaudell: Rising PGY-5s and anyone interested, we have a 5th HN rad onc position @MoffittNews. If interested in joining a busy team,….
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@DavidSherMD
David Sher
1 month
Excellent work here, with successful results consistent with the published literature on 40 Gy (or less) to the elective neck.
@safaviaa
Amir Safavi
1 month
Led by Drs. Zakeri & @imrtlee, we report early @MSK_RadOnc exp w/ 40 Gy ENI + CCRT for larynx, HPX, p16- OPX + CUP, 97.3% platinum, no uninvolved 1B+5. ☑️73 pts, f/u 23 months.✅no solitary elective failures, all LRF include 70 Gy failures.✅good QoL. 👉
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@DavidSherMD
David Sher
1 month
These results are obviously just hypothesis-generating with potential confounding, but I think it’s worth exploring these systemic effects of H&N radiation, and ENI in particular. Incredible work here by the first author Alston Mickel, one of our @UTSW_RadOnc residents. Much of.
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@DavidSherMD
David Sher
1 month
When diving into the anatomy, both ipsilateral and contralateral carotid doses were associated with lymphopenia, and the cervical spine dose was particularly influential. We looked at both mean dose and V40 of these structures, and both were significantly associated with grade.
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@DavidSherMD
David Sher
1 month
We compared grade 3 and grade 4 lymphopenia in three cohorts. One trial studied ENI dose (40 Gy) and volume reduction trial (INFIELD), one study investigated INRT (INRT-AIR), and one cohort of patients treated with standard ENI (mid-50 Gy). The risk of severe lymphopenia was.
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@DavidSherMD
David Sher
1 month
Lymphopenia and ENI. It has been long established that H&N radiation leads to lymphopenia, which can last several months. The adverse prognostic impact of lymphopenia has also been shown. However, specific predictors of lymphopenia are poorly understood. Our experience of.
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@DavidSherMD
David Sher
1 month
We have proposed something similar, replacing the PTV with an adaptive target volume (ATV). The ATV is a combination of contour uncertainty under adaptive conditions plus an adjustment for residual intra-fractional motion. Personally, I favor an adaptive target volume, because.
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@DavidSherMD
David Sher
1 month
Eliminating the PTV as a concept is a provocative idea. This editorial is worth a read.
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@DavidSherMD
David Sher
2 months
RT @DoctorJSpicer: Is anyone surprised that CM816 is the only pure neoadjuvant phase 3 trial for resectable solid organ disease?!? Now that….
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@DavidSherMD
David Sher
2 months
RT @StephenVLiu: This is a major story from #ASCO25. Randomized phase 3 trial of time of day of immunotherapy infusion. Randomized to infus….
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@DavidSherMD
David Sher
2 months
5. I don't entirely understand why there wasn't a statistical DM benefit in NIVOPOSTOP, although perhaps the competing risk of LRR was just too high to see a distant benefit (more than in KN-689). 6. The relative ratio of distant:locoregional recurrences was quite high in the.
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@DavidSherMD
David Sher
2 months
4. RTOG 0920 showed that HPV-negative patients with intermediate-risk path factors benefit substantially with concurrent cetux. So there may have been inadequate locoregional therapy in both arms (versus NIVOPOSTOP). Plus, there was downstaging with pembro and less concurrent.
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@DavidSherMD
David Sher
2 months
Here are a few observations on failure patterns, recognizing we don't have the full data to examine. 1. In KN-689, the patients in the control arm did quite poorly. In the control arm, the EFS was only 62.5% at 1 year. Contrast that with a DFS of ~55% in the RT-only arm of RTOG.
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@DavidSherMD
David Sher
2 months
The difference in patterns-of-failure is odd (to say the least) and should make us take a step back in understanding the mechanism of potential benefit for I/O in these studies.
@BasuLab1
Devraj Basu, MD, PhD, FACS
2 months
Interesting phase 3 for advanced resectable HNSCC w/ similar design to KN689 - key difference beyond omitting neoadj. part is inclusion based on high risk path . Losing KN689's DM benefit makes sense here, but why it produces LRC benefit when KN689 did not puzzles me.
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