Soichiro Mishima

Dr. Soichiro Mishima


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

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

Representative Publications

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19 July 2024 in Medicina
Verified
Journal Article
Open access
PDF file
AKAKIKO KIN
AKIKO KIN
TMTakahiro Mizukami
Takahiro Mizukami
SUSatoru Ueno
Satoru Ueno
SMSoichiro Mishima
Soichiro Mishima
YSYoshikazu Shimomura
Yoshikazu Shimomura
Background and Objectives: In this study, our objective was to assess and compare the changes in visual and structural outcomes among patients with neovascular age-related macular degeneration (nAMD) who were switched from intravitreal aflibercept (IVA) to either intravitreal brolucizumab (IVBr) or intravitreal faricimab (IVF) injections in a clinical setting. Materials and Methods: This observational clinical study included 20 eyes of 20 patients switched to brolucizumab and 15 eyes of 14 patients switched to faricimab from aflibercept in eyes with nAMD. We measured the structural outcome (central macular thickness (CMT)) and the visual outcome (best-corrected visual acuity (BCVA); logMAR) as follows: just before the most recent IVA injection (B0), one month after the most recent IVA injection (B1), just before the first IVBr or IVF injection (A0), one month after (A1) and three months after (A3) the first IVBr or IVF injection. Results: BCVA showed significant improvement at A1 (0.25 ± 0.34) and at A3 (0.19 ± 0.24) compared to A0 (0.38 ± 0.35) in the IVBr group (p = 0.0156, p = 0.0166, respectively). CMT (μm) was significantly thinner at A1 (IVBr: 240.55 ± 51.82, IVF: 234.91 ± 47.29) and at A3 (IVBr: 243.21 ± 76.15, IVF: 250.50 ± 72.61) compared to at A0 (IVBr: 303.55 ± 79.18, IVF: 270.33 ± 77.62) in the IVBr group (A1: p = 0.0093, A3: p = 0.0026) and in the IVF group (A1: p = 0.0161, A3: p = 0.0093). There was no significant difference in BCVA and CMT improvement observed between two groups at any time point (p > 0.05 for all). Conclusions: Switching from aflibercept to either brolucizumab or faricimab has a significant anatomical effect in eyes with nAMD and both treatments appear to be effective short-term treatment options. There is a trend towards greater visual improvements and reductions in CMT with brolucizumab.

25 June 2024 in Preprints.org
Verified
Preprint
Open access
PDF file
AKAKIKO KIN
AKIKO KIN
TMTakahiro Mizukami
Takahiro Mizukami
SUSatoru Ueno
Satoru Ueno
SMSoichiro Mishima
Soichiro Mishima
YSYoshikazu Shimomura
Yoshikazu Shimomura
Backgorund and Objectives: In this study, we aimed to evaluate and compare the changes in visual and structural outcomes in patients with intravitreal aflibercept (IVA)-resistant neovascular age-related macular degeneration (nAMD) switched to either intravitreal brolucizumab (IVBr) or intravitreal faricimab (IVF) injections in a clinical setting. Materials and Methods: This obser-vational clinical study included 20 eyes of 20 patients switched to brolucizumab and 15 eyes of 14 patients switched to faricimab for aflibercept-resistant nAMD. We measured the structural outcome (central macular thickness (CMT)) and the visual outcome (best-corrected visual acuity (BCVA); logMAR) as follows: just before the most recent IVA injection (B0), one month after the most recent IVA injection (B1), just before the first IVBr or IVF injection (A0), one month after (A1) and three months after (A3) the first IVBr or IVF injection. Results: BCVA showed significant im-provement at A1 (0.25 ± 0.34) and at A3 (0.19 ± 0.24) compared to A0 (0.38 ± 0.35) in IVBr group (p = 0.0156, p = 0.0166, respectively). CMT (μm) was significantly thinner at A1 (IVBr; 240.55 ± 51.82, IVF; 234.91 ± 47.29) and at A3 (IVBr; 243.21 ± 76.15, IVF; 250.50 ± 72.61) compared to at A0 (IVBr; 303.55 ± 79.18, IVF; 270.33 ± 77.62) in IVBr group (A1; p = 0.0093, A3; p = 0.0026) and in IVF group (A1; p = 0.0161, A3; p = 0.0093). There was no significant difference in BCVA and CMT improvement observed between two groups at any time point (p > 0.05 for all). Conclusion: Switching from aflibercept to either brolucizumab or faricimab has a significant anatomical ef-fect on eyes with aflibercept-resistant nAMD and both treatments appear to be effective short-term treatment options. There is a trend towards greater visual improvements and reductions in CMT with brolucizumab.

28 August 2025 in Biologics
Verified
Journal Article
Open access
PDF file
TMTakahiro Mizukami
Takahiro Mizukami
SUSatoru Ueno
Satoru Ueno
SMSoichiro Mishima
Soichiro Mishima
YSYoshikazu Shimomura
Yoshikazu Shimomura
Background/Objectives: The relative efficacy of 8 mg aflibercept compared to 2 mg in treating neovascular age-related macular degeneration (nAMD) has not been fully established. This study aims to compare the visual and anatomical outcomes of aflibercept 8 mg versus 2 mg in patients with nAMD in both treatment-naïve individuals with no history of anti-VEGF treatment and those previously treated with intravitreal injections. Methods: This retrospective study included 13 eyes treated with aflibercept 8 mg and 14 eyes with aflibercept 2 mg in treatment-naïve patients, along with 15 eyes switched to aflibercept 8 mg previously treated with other intravitreal injections and 15 eyes continued on aflibercept 2 mg in patients. Baseline and one-month post-injection changes in best-corrected visual acuity (BCVA) and central macular thickness (CMT) were assessed. Results: In treatment-naïve patients, the aflibercept 8 mg group showed a significant improvement in BCVA (logMAR 0.19 ± 0.23 to 0.13 ± 0.20, p = 0.0156), while the 2 mg group did not. Both doses reduced CMT significantly, with a greater reduction in the 8 mg group (dCMT 28.60% vs. 24.08%, p = 0.0220). In previously treated patients, no significant changes in BCVA were noted in either group; however, both groups showed significant reductions in CMT. Conclusions: Real-world data demonstrated that aflibercept 8 mg led to substantial improvements in anatomical outcomes one month after injection, irrespective of previous intravitreal injection history. However, significant improvements in visual outcomes were observed exclusively in treatment-naïve patients. Further large-scale, long-term studies are required to determine the proportion of patients who experience improvement and to assess whether these improvements are maintained over time.