Ryan W. Dobbs

Dr. Ryan W. Dobbs


Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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28 August 2019 in World Journal of Urology
Verified
Journal Article
Closed access
PDF file
RDRyan W. Dobbs
Ryan W. Dobbs
WHWhitney R. Halgrimson
Whitney R. Halgrimson
STSusan Talamini
Susan Talamini
HVHari T. Vigneswaran
Hari T. Vigneswaran
JWJessica O. Wilson
Jessica O. Wilson
SCSimone Crivellaro
Simone Crivellaro

5 October 2015 in BJU International
Verified
Journal Article
Open access
PDF file
DRDaniel Ramirez
Daniel Ramirez
AGAmit Gupta
Amit Gupta
DCDaniel Canter
Daniel Canter
BHBrian Harrow
Brian Harrow
RDRyan W. Dobbs
Ryan W. Dobbs
YLYair Lotan
Yair Lotan
Objectives: To determine whether the severity of haematuria (microscopic or gross) at diagnosis influences the disease stage at presentation in patients diagnosed with bladder cancer. Patients and Methods: We conducted a multi‐institutional observational cohort study of patients who were newly diagnosed with bladder cancer between August 1999 and May 2012. We reviewed the degree of haematuria, demographic information, clinical and social history, imaging, and pathology. The association of haematuria severity with incident tumour stage and grade was evaluated using logistic regression. Results: Patients diagnosed with bladder cancer presented with gross haematuria ( GH ; 1 083, 78.3%), microscopic haematuria ( MH ; 189, 13.7%) or without haematuria (112, 8.1%). High‐grade disease was found in 64% and 57.1% of patients presenting with GH and MH , respectively, and severity of haematuria was not associated with higher grade disease. Stage of disease at diagnosis for patients presenting with MH was Ta/carcinoma in situ ( CIS ) in 68.8%, T1 in 19.6%, and ≥T2 in 11.6%. Stage of disease at diagnosis for patients presenting with GH was Ta/ CIS in 55.9%, T1 in 19.6%, and ≥T2 in 17.9%. On multivariate analyses, GH was independently associated with ≥T2 disease at diagnosis (odds ratio 1.69, 95% confidence interval 1.05–2.71, P = 0.03). Conclusions: Among patients with newly diagnosed bladder cancer, presentation with GH is associated with a more advanced pathological stage. Earlier detection of disease, before development of GH , could influence survival in patients with bladder cancer. Type of haematuria at presentation does not impact grade of disease.

13 July 2019 in BJU International
Verified
Journal Article
Closed access
PDF file
RDRyan W. Dobbs
Ryan W. Dobbs
WHWhitney R. Halgrimson
Whitney R. Halgrimson
IMIkenna Madueke
Ikenna Madueke
HVHari T. Vigneswaran
Hari T. Vigneswaran
JWJessica O. Wilson
Jessica O. Wilson
SCSimone Crivellaro
Simone Crivellaro

20 July 2023 in Journal of Clinical Oncology
Verified
Journal Article
Closed access
TZTalal El Zarif
Talal El Zarif
Amin NassarAmin Nassar
Amin Nassar
EAElio Adib
Elio Adib
BFBailey G. Fitzgerald
Bailey G. Fitzgerald
JHJiaming Huang
Jiaming Huang
RNRafeh Naqash
Rafeh Naqash
PURPOSE: Compared with people living without HIV (PWOH), people living with HIV (PWH) and cancer have traditionally been excluded from immune checkpoint inhibitor (ICI) trials. Furthermore, there is a paucity of real-world data on the use of ICIs in PWH and cancer. METHODS: This retrospective study included PWH treated with anti–PD-1- or anti–PD-L1-based therapies for advanced cancers. Kaplan-Meier method was used to estimate overall survival (OS) and progression-free survival (PFS). Objective response rates (ORRs) were measured per RECIST 1.1 or other tumor-specific criteria, whenever feasible. Restricted mean survival time (RMST) was used to compare OS and PFS between matched PWH and PWOH with metastatic NSCLC (mNSCLC). RESULTS: Among 390 PWH, median age was 58 years, 85% (n = 331) were males, 36% (n = 138) were Black; 70% (n = 274) received anti–PD-1/anti–PD-L1 monotherapy. Most common cancers were NSCLC (28%, n = 111), hepatocellular carcinoma ([HCC]; 11%, n = 44), and head and neck squamous cell carcinoma (HNSCC; 10%, n = 39). Seventy percent (152/216) had CD4+ T cell counts ≥200 cells/µL, and 94% (179/190) had HIV viral load <400 copies/mL. Twenty percent (79/390) had any grade immune-related adverse events (irAEs) and 7.7% (30/390) had grade ≥3 irAEs. ORRs were 69% (nonmelanoma skin cancer), 31% (NSCLC), 16% (HCC), and 11% (HNSCC). In the matched mNSCLC cohort (61 PWH v 110 PWOH), 20% (12/61) PWH and 22% (24/110) PWOH had irAEs. Adjusted 42-month RMST difference was –0.06 months (95% CI, –5.49 to 5.37; P = .98) for PFS and 2.23 months (95% CI, –4.02 to 8.48; P = .48) for OS. CONCLUSION: Among PWH, ICIs demonstrated differential activity across cancer types with no excess toxicity. Safety and activity of ICIs were similar between matched cohorts of PWH and PWOH with mNSCLC.

21 August 2018 in Prostate Cancer and Prostatic Diseases
Verified
Journal Article
Closed access
PDF file
RDRyan W. Dobbs
Ryan W. Dobbs
NMNeha R. Malhotra
Neha R. Malhotra
DGDavid T. Greenwald
David T. Greenwald
AWAlice Y. Wang
Alice Y. Wang
GPGail S. Prins
Gail S. Prins
MAMichael R. Abern
Michael R. Abern

1 April 2020 in Urology
Verified
Journal Article
Closed access
OAOmer Acar
Omer Acar
LSLaurel Sofer
Laurel Sofer
RDRyan W. Dobbs
Ryan W. Dobbs
DGDavid T. Greenwald
David T. Greenwald
WHWhitney R. Halgrimson
Whitney R. Halgrimson
EKErvin Kocjancic
Ervin Kocjancic