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706 citation(s) found for "Wu, Kai".

Does the number of social factors affect long-term patient-reported outcomes and satisfaction in those with cervical myelopathy? A QOD study
Park, Christine , Shaffrey, Christopher I. , Than, Khoi D. , Bisson, Erica F. , Sherrod, Brandon A. , Asher, Anthony L. , Coric, Domagoj , Potts, Eric A. , Foley, Kevin T. , Wang, Michael Y. , Fu, Kai-Ming, Virk, Michael S. , Knightly, John J. , Meyer, Scott A., Upadhyaya, Cheerag D., Shaffrey, Mark E., Buchholz, Avery L., Tumialán, Luis M. , Turner, Jay D. , Chan, Andrew K. , Chou, Dean , Chaudhry, Nauman S. , Haid, Regis W., Mummaneni, Praveen V. , Michalopoulos, Giorgos D. , Bydon, Mohamad , Gottfried, Oren N., Michalopoulos, Georgios D, Michalopoulos, Giorgos , Park, Paul , Agarwal, Nitin

Journal of Neurosurgery: Spine | January 20, 2024 | Volume: 40 | Issue: 4 | Pages: 428-438

10.3171/2023.11.spine23127 | PMID 38241683 Get It

OBJECTIVE It is not clear whether there is an additive effect of social factors in keeping patients with cervical spondylotic myelopathy (CSM) from achieving both a minimum clinically important difference (MCID) in outcomes and satisfaction after surgery. The aim of this study was to explore the effect of multiple social factors on postoperative outcomes and satisfaction. METHODS This was a multiinstitutional, retrospective study of the prospective Quality Outcomes Database (QOD) CSM cohort, which included patients aged 18 years or older who were diagnosed with primary CSM and underwent operative management. Social factors included race (White vs non-White), education (high school or below vs above), employment (employed vs not), and insurance (private vs nonprivate). Patients were considered to have improved from surgery if the following criteria were met: 1) they reported a score of 1 or 2 on the North American Spine Society index, and 2) they met the MCID in patient-reported outcomes (i.e., visual analog scale [VAS] neck and arm pain, Neck Disability Index [NDI], and EuroQol-5D [EQ-5D]). RESULTS Of the 1141 patients included in the study, 205 (18.0%) had 0, 347 (30.4%) had 1, 334 (29.3%) had 2, and 255 (22.3%) had 3 social factors. The 24-month follow-up rate was > 80% for all patient-reported outcomes. After adjusting for all relevant covariates (p < 0.02), patients with 1 or more social factors were less likely to improve from surgery in all measured outcomes including VAS neck pain (OR 0.90, 95% CI 0.83–0.99) and arm pain (OR 0.88, 95% CI 0.80–0.96); NDI (OR 0.90, 95% CI 0.83–0.98); and EQ-5D (OR 0.90, 95% CI 0.83–0.97) (all p < 0.05) compared to those without any social factors. Patients with 2 social factors (outcomes: neck pain OR 0.86, arm pain OR 0.81, NDI OR 0.84, EQ-5D OR 0.81; all p < 0.05) or 3 social factors (outcomes: neck pain OR 0.84, arm pain OR 0.84, NDI OR 0.84, EQ-5D OR 0.84; all p < 0.05) were more likely to fare worse in all outcomes compared to those with only 1 social factor. CONCLUSIONS Compared to those without any social factors, patients who had at least 1 social factor were less likely to achieve MCID and feel satisfied after surgery. The effect of social factors is additive in that patients with a higher number of factors are less likely to improve compared to those with only 1 social factor.
What predicts the best 24-month outcomes following surgery for cervical spondylotic myelopathy? A QOD prospective registry study
Chan, Andrew K. , Park, Christine , Shaffrey, Christopher I. , Gottfried, Oren N., Than, Khoi D. , Bisson, Erica F. , Bydon, Mohamad , Asher, Anthony L. , Coric, Domagoj , Potts, Eric A. , Foley, Kevin T. , Wang, Michael Y. , Fu, Kai-Ming, Virk, Michael S. , Knightly, John J. , Meyer, Scott A., Upadhyaya, Cheerag D., Shaffrey, Mark E., Buchholz, Avery L., Tumialán, Luis M. , Turner, Jay D. , Michalopoulos, Giorgos D. , Sherrod, Brandon A. , Chou, Dean , Haid, Regis W., Mummaneni, Praveen V. , Michalopoulos, Giorgos , Park, Paul , Agarwal, Nitin

Journal of Neurosurgery: Spine | January 5, 2024 | Volume: 40 | Issue: 4 | Pages: 453-464

10.3171/2023.11.spine23222 | PMID 38181405 Get It

OBJECTIVE The aim of this study was to identify predictors of the best 24-month improvements in patients undergoing surgery for cervical spondylotic myelopathy (CSM). For this purpose, the authors leveraged a large prospective cohort of surgically treated patients with CSM to identify factors predicting the best outcomes for disability, quality of life, and functional status following surgery. METHODS This was a retrospective analysis of prospectively collected data. The Quality Outcomes Database (QOD) CSM dataset (1141 patients) at 14 top enrolling sites was used. Baseline and surgical characteristics were compared for those reporting the top and bottom 20th percentile 24-month Neck Disability Index (NDI), EuroQol-5D (EQ-5D), and modified Japanese Orthopaedic Association (mJOA) change scores. A multivariable logistic model was constructed and included candidate variables reaching p ≤ 0.20 on univariate analyses. Least important variables were removed in a stepwise manner to determine the significant predictors of the best outcomes (top 20th percentile) for 24-month NDI, EQ-5D, and mJOA change. RESULTS A total of 948 (83.1%) patients with 24-month follow-up were included in this study. For NDI, 204 (17.9%) had the best NDI outcome and 200 (17.5%) had the worst NDI outcome. Factors predicting the best NDI outcomes included symptom duration less than 12 months (OR 1.5, 95% CI 1.1–1.9; p = 0.01); procedure other than posterior fusion (OR 1.5, 95% CI 1.03–2.1; p = 0.03); higher preoperative visual analog scale neck pain score (OR 1.2, 95% CI 1.1–1.3; p < 0.001); and higher baseline NDI (OR 1.06, 95% CI 1.05–1.07; p < 0.001). For EQ-5D, 163 (14.3%) had the best EQ-5D outcome and 169 (14.8%) had the worst EQ-5D outcome. Factors predicting the best EQ-5D outcomes included arm pain–only complaints (compared to neck pain) (OR 1.9, 95% CI 1.3–2.9; p = 0.002) and lower baseline EQ-5D (OR 167.7 per unit lower, 95% CI 85.0–339.4; p < 0.001). For mJOA, 222 (19.5%) had the best mJOA outcome and 238 (20.9%) had the worst mJOA outcome. Factors predicting the best mJOA outcomes included lower BMI (OR 1.03 per unit lower, 95% CI 1.004–1.05; p = 0.02; cutoff value of ≤ 29.5 kg/m 2 ); arm pain–only complaints (compared to neck pain) (OR 1.7, 95% CI 1.1–2.5; p = 0.02); and lower baseline mJOA (OR 1.6 per unit lower, 95% CI 1.5–1.7; p < 0.001). CONCLUSIONS Compared to the worst outcomes for EQ-5D, the best outcomes were associated with patients with arm pain–only complaints. For mJOA, lower BMI and arm pain–only complaints portended the best outcomes. For NDI, those with the best outcomes had shorter symptom durations, higher preoperative neck pain scores, and less often underwent posterior spinal fusions. Given the positive impact of shorter symptom duration on outcomes, these data suggest that early surgery may be beneficial for patients with CSM.
Applying the EHA/EBMT grading for ICAHT after CAR-T: comparative incidence and association with infections and mortality
Rejeski, Kai , Wang, Yucai , Iacoboni, Gloria , Bachy, Emmanuel , Bansal, Radhika , Penack, Olaf , Müller, Fabian , Bethge, Wolfgang , Mohty, Razan , Bücklein, Veit , Barba, Pere , Lin, Yi , Iacoboni, Gloria , Bachy, Emmanuel , Bansal, Radhika , Müller, Fabian , Bethge, Wolfgang , Bücklein, Veit L , Jain, Michael D , Subklewe, Marion , Wang, Yucai , Hansen, Doris K. , Muñoz, Javier , Locke, Frederick L. , Jain, Michael D.

Blood Advances | January 5, 2024 | Volume: 8 | Issue: 8 | Pages: 1857-1868

10.1182/bloodadvances.2023011767 | PMID 38181508 Get It

Abstract Cytopenias represent the most common side effect of CAR T-cell therapy (CAR-T) and can predispose for severe infectious complications. Current grading systems, such as the Common Terminology Criteria for Adverse Events (CTCAE), neither reflect the unique quality of post–CAR-T neutrophil recovery, nor do they reflect the inherent risk of infections due to protracted neutropenia. For this reason, a novel EHA/EBMT consensus grading was recently developed for Immune Effector Cell-Associated HematoToxicity (ICAHT). In this multicenter, observational study, we applied the grading system to a large real-world cohort of 549 patients treated with BCMA- or CD19-directed CAR-T for refractory B-cell malignancies (112 multiple myeloma [MM], 334 large B-cell lymphoma [LBCL], 103 mantle cell lymphoma [MCL]) and examined the clinical sequelae of severe (≥3°) ICAHT. The ICAHT grading was strongly associated with the cumulative duration of severe neutropenia (r = 0.92, P &lt; .0001), the presence of multilineage cytopenias, and the use of platelet and red blood cell transfusions. We noted an increased rate of severe ICAHT in patients with MCL vs those with LBCL and MM (28% vs 23% vs 15%). Severe ICAHT was associated with a higher rate of severe infections (49% vs 13%, P &lt; .0001), increased nonrelapse mortality (14% vs 4%, P &lt; .0001), and inferior survival outcomes (1-year progression-free survival: 35% vs 51%, 1-year overall survival: 52% vs 73%, both P &lt; .0001). Importantly, the ICAHT grading demonstrated superior capacity to predict severe infections compared with the CTCAE grading (c-index 0.73 vs 0.55, P &lt; .0001 vs nonsignificant). Taken together, these data highlight the clinical relevance of the novel grading system and support the reporting of ICAHT severity in clinical trials evaluating CAR-T therapies.
Impact of Educational Background on Preoperative Disease Severity and Postoperative Outcomes Among Patients With Cervical Spondylotic Myelopathy
DiGiorgio, Anthony M. , Michalopoulos, Giorgos D. , Chan, Andrew K. , Shabani, Saman , Lu, Daniel C. , Wang, Michael Y. , Haid, Regis W., Knightly, John J. , Sherrod, Brandon A. , Gottfried, Oren N., Shaffrey, Christopher I. , Virk, Michael S. , Hussain, Ibrahim , Glassman, Steven D. , Shaffrey, Mark E., Foley, Kevin T. , Pennicooke, Brenton , Coric, Domagoj , Upadhyaya, Cheerag D., Potts, Eric A. , Tumialán, Luis M. , Fu, Kai-Ming, Asher, Anthony L. , Bisson, Erica F. , Chou, Dean , Bydon, Mohamad , Mummaneni, Praveen V. , Michalopoulos, Giorgos , Agarwal, Nitin , Letchuman, Vijay , Lavadi, Raj Swaroop , Goldberg, Jacob L. , Park, Paul

Clinical Spine Surgery | December 16, 2023 | Volume: 37 | Issue: 3 | Pages: E137-E146

10.1097/bsd.0000000000001557 | PMID 38102749 Get It

Study Design: Retrospective review of a prospectively maintained database. Objective: Assess differences in preoperative status and postoperative outcomes among patients of different educational backgrounds undergoing surgical management of cervical spondylotic myelopathy (CSM). Summary of Background Data: Patient education level (EL) has been suggested to correlate with health literacy, disease perception, socioeconomic status (SES), and access to health care. Methods: The CSM data set of the Quality Outcomes Database (QOD) was queried for patients undergoing surgical management of CSM. EL was grouped as high school or below, graduate-level, and postgraduate level. The association of EL with baseline disease severity (per patient-reported outcome measures), symptoms >3 or ≤3 months, and 24-month patient-reported outcome measures were evaluated. Results: Among 1141 patients with CSM, 509 (44.6%) had an EL of high school or below, 471 (41.3%) had a graduate degree, and 161 (14.1%) had obtained postgraduate education. Lower EL was statistically significantly associated with symptom duration of >3 months (odds ratio=1.68), higher arm pain numeric rating scale (NRS) (coefficient=0.5), and higher neck pain NRS (coefficient=0.79). Patients with postgraduate education had statistically significantly lower Neck Disability Index (NDI) scores (coefficient=-7.17), lower arm pain scores (coefficient=−1), and higher quality-adjusted life-years (QALY) scores (coefficient=0.06). Twenty-four months after surgery, patients of lower EL had higher NDI scores, higher pain NRS scores, and lower QALY scores (P<0.05 in all analyses). Conclusions: Among patients undergoing surgical management for CSM, those reporting a lower educational level tended to present with longer symptom duration, more disease-inflicted disability and pain, and lower QALY scores. As such, patients of a lower EL are a potentially vulnerable subpopulation, and their health literacy and access to care should be prioritized.
Assessing ChatGPT for Text Summarization, Simplification and Extraction Tasks
Malik, Sheza , Roy, Mousumi , Islam, Meena Z, Rasheed, Umair, Bian, Jiang , Zheng, Kai , Zhang, Rui , Bian, Jiang , Tariq, Raseen , Roy, Mousumi

2023 IEEE 11th International Conference on Healthcare Informatics (ICHI) | December 11, 2023 | Volume: No volume available | Issue: No issue available | Pages: 746-749

10.1109/ichi57859.2023.00136 Get It

Therapeutic Consequences of Targeting the IGF-1/PI3K/AKT/FOXO3 Axis in Sarcopenia: A Narrative Review
Gellhaus, Benjamin , Böker, Kai O. , Schilling, Arndt F. , Saul, Dominik , Schilling, Arndt Friedrich , Saul, Dominik

Cells | December 7, 2023 | Volume: 12 | Issue: 24 | Pages: 2787

10.3390/cells12242787 | PMID 38132107 Get It

The high prevalence of sarcopenia in an aging population has an underestimated impact on quality of life by increasing the risk of falls and subsequent hospitalization. Unfortunately, the application of the major established key therapeutic—physical activity—is challenging in the immobile and injured sarcopenic patient. Consequently, novel therapeutic directions are needed. The transcription factor Forkhead-Box-Protein O3 (FOXO3) may be an option, as it and its targets have been observed to be more highly expressed in sarcopenic muscle. In such catabolic situations, Foxo3 induces the expression of two muscle specific ubiquitin ligases (Atrogin-1 and Murf-1) via the PI3K/AKT pathway. In this review, we particularly evaluate the potential of Foxo3-targeted gene therapy. Foxo3 knockdown has been shown to lead to increased muscle cross sectional area, through both the AKT-dependent and -independent pathways and the reduced impact on the two major downstream targets Atrogin-1 and Murf-1. Moreover, a Foxo3 reduction suppresses apoptosis, activates satellite cells, and initiates their differentiation into muscle cells. While this indicates a critical role in muscle regeneration, this mechanism might exhaust the stem cell pool, limiting its clinical applicability. As systemic Foxo3 knockdown has also been associated with risks of inflammation and cancer progression, a muscle-specific approach would be necessary. In this review, we summarize the current knowledge on Foxo3 and conceptualize a specific and targeted therapy that may circumvent the drawbacks of systemic Foxo3 knockdown. This approach presumably would limit the side effects and enable an activity-independent positive impact on skeletal muscle.
IgLON5 Autoimmunity: Serological Findings, Neurological Disorders & Outcomes in 16 patients (S20.004)
Honorat, Josephe A., Komorowski, Lars , Fechner, Kaï, Hinson, Shannon R., Lederer, Sabine , Kumar, Neeraj , Lennon, Vanda A. , Louis, Erik K. St. , Fechner, Kai, Pittock, Sean J. , McKeon, Andrew

Neurology | December 7, 2023 | Volume: 88 | Issue: 16_supplement | Pages: No page available

10.1212/wnl.88.16_supplement.s20.004 Get It

Evaluating the heterogeneity of hippocampal avoidant whole brain radiotherapy treatment effect: A secondary analysis of NRG CC001
Cherng, H.R.R. , Bentzen, Søren M. , Armstrong, Terri S. , Gondi, Vinai , Brown, Paul D. , Mishra, Mark V. , Cherng, Hua-Ren R , Bentzen, Soren M , Armstrong, Terri S , Mishra, Mark V , Sun, Kai, Mehta, Minesh P.

Neuro-Oncology | December 5, 2023 | Volume: 26 | Issue: 5 | Pages: 911-921

10.1093/neuonc/noad226 | PMID 38069666 Get It

Abstract Background Hippocampal avoidant whole brain radiotherapy (HA-WBRT) is the standard of care for patients needing WBRT for brain metastases. This study, using existing data from NRG Oncology CC001 including baseline tumor characteristics and patient-reported MD Anderson Symptom Inventory-Brain Tumor (MDASI-BT) scores, sought to identify subgroups of patients that demonstrate differential neuroprotective treatment response to HA-WBRT. Methods An exploratory analysis of NRG CC001, a phase 3 trial in which 518 patients were randomly assigned to WBRT plus memantine or HA-WBRT plus memantine, was performed. Rates of neurocognitive function failure (NCFF) were estimated between subgroups and stratified by arm. Covariate and subgroup interaction with differential treatment response were calculated. Results The benefit of HA-WBRT on decreasing NCFF was seen in patients living ≥ 4 months (HR 0.75, 95% CI: 0.58–0.97, P = .03), whereas patients living &lt; 4 months derived no significant neurocognitive benefit. A significant association between baseline MDASI-BT cognitive factor and treatment response (interaction P = .03) was identified. Patients with lower MDASI-BT scores (less patient-reported cognitive impairment) derived significantly greater benefit (HR = 0.64, 95% CI: 0.48–0.85, P = .002) compared to those with highest MDASI-BT scores (HR = 1.24, 95% CI: 0.76–2.04, P = .39). Tumor histology also had a significant interaction (P = .01) with treatment response. Primary lung histology patients derived cognitive failure risk reduction (HR = 0.58, 95% CI: 0.43–0.77, P = .0007) from HA-WBRT, in contrast to nonlung primary histology patients (HR = 1.15, 95% CI: 0.78–1.50, P = .48). Conclusions Differential neuroprotective response to HA-WBRT was identified in this analysis. Patients surviving ≥ 4 months derived benefit from HA-WBRT. There is evidence of heterogeneity of treatment effect for patients with less severe patient-reported cognitive impairment at baseline and those with primary lung histology.
Does diabetes affect outcome or reoperation rate after lumbar decompression or arthrodesis? A matched analysis of the Quality Outcomes Database data set
Mooney, James , Zeitouni, Daniel , Michalopoulos, Giorgos D. , Wang, Michael Y. , Coric, Domagoj , Chan, Andrew K. , Lu, Daniel C. , Sherrod, Brandon A. , Gottfried, Oren N., Shaffrey, Christopher I. , Than, Khoi D. , Hussain, Ibrahim , Virk, Michael S. , Glassman, Steven D. , Shaffrey, Mark E., Foley, Kevin T. , Chou, Dean , Slotkin, Jonathan R., Tumialán, Luis M. , Upadhyaya, Cheerag D., Potts, Eric A. , Fu, Kai-Ming, Haid, Regis W., Knightly, John J. , Mummaneni, Praveen V. , Bisson, Erica F. , Asher, Anthony L. , Bydon, Mohamad , Michalopoulos, Giorgos , Nathani, Karim Rizwan , Goldberg, Jacob L. , Agarwal, Nitin , Park, Paul

Journal of Neurosurgery: Spine | December 2, 2023 | Volume: 40 | Issue: 3 | Pages: 331-342

10.3171/2023.9.spine23522 | PMID 38039534 Get It

OBJECTIVE Diabetes mellitus (DM) is a known risk factor for postsurgical and systemic complications after lumbar spinal surgery. Smaller studies have also demonstrated diminished improvements in patient-reported outcomes (PROs), with increased reoperation and readmission rates after lumbar surgery in patients with DM. The authors aimed to examine longer-term PROs in patients with DM undergoing lumbar decompression and/or arthrodesis for degenerative pathology. METHODS The Quality Outcomes Database was queried for patients undergoing elective lumbar decompression and/or arthrodesis for degenerative pathology. Patients were grouped into DM and non-DM groups and optimally matched in a 1:1 ratio on 31 baseline variables, including the number of operated levels. Outcomes of interest were readmissions and reoperations at 30 and 90 days after surgery in addition to improvements in Oswestry Disability Index, back pain, and leg pain scores and quality-adjusted life-years at 90 days after surgery. RESULTS The matched decompression cohort comprised 7836 patients (3236 [41.3] females) with a mean age of 63.5 ± 12.6 years, and the matched arthrodesis cohort comprised 7336 patients (3907 [53.3%] females) with a mean age of 64.8 ± 10.3 years. In patients undergoing lumbar decompression, no significant differences in nonroutine discharge, length of stay (LOS), readmissions, reoperations, and PROs were observed. In patients undergoing lumbar arthrodesis, nonroutine discharge (15.7% vs 13.4%, p < 0.01), LOS (3.2 ± 2.0 vs 3.0 ± 3.5 days, p < 0.01), 30-day (6.5% vs 4.4%, p < 0.01) and 90-day (9.1% vs 7.0%, p < 0.01) readmission rates, and the 90-day reoperation rate (4.3% vs 3.2%, p = 0.01) were all significantly higher in the DM group. For DM patients undergoing lumbar arthrodesis, subgroup analyses demonstrated a significantly higher risk of poor surgical outcomes with the open approach. CONCLUSIONS Patients with and without DM undergoing lumbar spinal decompression alone have comparable readmission and reoperation rates, while those undergoing arthrodesis procedures have a higher risk of poor surgical outcomes up to 90 days after surgery. Surgeons should target optimal DM control preoperatively, particularly for patients undergoing elective lumbar arthrodesis.
Applying the Novel EHA/EBMT Grading System for Icaht Following CAR-T Therapy: Comparative Incidence across Disease Entities and Association with Infections and Mortality
Iacoboni, Gloria , Bansal, Radhika , Mueller, Fabian, Mohty, Razan , Buecklein, Veit, Barba, Pere , Subklewe, Marion, Rejeski, Kai , Hansen, Doris K. , Wang, Yucai , Bachy, Emmanuel , Penack, Olaf , Mueller, Fabian, Bethge, Wolfgang , Muñoz, Javier , Bücklein, Veit , Locke, Frederick L. , Lin, Yi , Jain, Michael D.

Blood | December 1, 2023 | Volume: 142 | Issue: Supplement 1 | Pages: 359-359

10.1182/blood-2023-180607 Get It

Background: Hematological toxicity is a frequent side effect of CAR-T therapy and predisposes for severe infectious complications. Recently, the EHA/EBMT consensus grading for Immune Effector Cell Associated HematoToxicity (ICAHT) was developed ( Rejeski et al. Blood 2023). In contrast to existing grading systems such as the CTCAE, the novel ICAHT grading integrates both the depth and duration of neutropenia. We hypothesized that ICAHT severity is associated with key clinical sequelae such as transfusion requirements, hospitalization, severe infections, and adverse treatment outcomes. Methods: We applied the novel grading of early ICAHT (day 0-30) to a multicenter retrospective real-world cohort of 549 patients treated with BCMA- or CD19-directed CAR T-cells for relapsed/refractory B-cell malignancies (334 large B-cell lymphoma [LBCL], 112 multiple myeloma [MM], 103 mantle cell lymphoma [MCL]) across twelve international sites (Germany, France, Spain, USA). Hematotoxicity endpoints included the total cumulative duration of severe neutropenia (ANC &lt;500/µL, day 0-60) and phenotypes of neutrophil recovery ( Rejeski et al. Blood 2021). Infections were studied until day +90 after CAR-T and were graded on a 5-grade scale as mild, moderate, severe, life-threatening, or fatal. Non-relapse mortality (NRM) was defined as death following CAR-T without evidence of relapse or progression. Kaplan-Meier estimates of progression-free (PFS) and overall survival (OS) were compared using log-rank test. Results: Our study cohort included 424 patients without severe ICAHT (absent or grade 1-2) and 125 patients with severe ICAHT (grade 3-4). The distribution of mild (1°), moderate (2°), severe (3°) and life-threatening (4°) ICAHT was 36%, 29%, 17%, and 5%. Seventy patients (13%) did not develop ICAHT of any grade. When comparing ICAHT grades across disease entities, we noted a numeric trend towards increased severe ICAHT in MCL compared to LBCL or MM patients (Grade ≥3: 28% vs. 23% vs. 15%). Patients that subsequently developed severe ICAHT displayed elevated serum inflammatory markers and pronounced cytopenia at baseline - reflected by increased CAR-HEMATOTOX scores (median 3 vs. 1, p&lt;0.0001). On multivariate binary logistic regression, co-stimulatory domain (CD28z), low platelet count, low ANC, low hemoglobin, increased serum ferritin, and the presence of bone marrow infiltration were independent risk factors for severe ICAHT. We noted a strong positive correlation between ICAHT severity and the cumulative duration of severe neutropenia (r=0.92, p&lt;0.0001). The aplastic phenotype of neutrophil recovery was enriched in patients with grade 3 (73%) and especially grade 4 ICAHT (100%). Severe ICAHT was also associated with coincident multilineage cytopenias, resulting in increased transfusion requirements for both platelets (85% vs. 21%, p&lt;0.0001) and red blood cells (86% vs. 41%, p&lt;0.0001). In terms of management of hematotoxicity, the severe ICAHT group more commonly received G-CSF (72% vs. 44%, p=0.01), TPO mimetics (12% vs. 2%, p&lt;0.0001) and hematopoietic stem cell boosts (6% vs. 0.2%, p&lt;0.0001). Importantly, patients with severe ICAHT displayed a significantly increased rate of severe infections (49% vs. 13%, p&lt;0.0001, Fig. 1a) and severe bacterial infections (36% vs. 8%, p&lt;0.0001). This translated into a markedly increased 1-year NRM rate (14% vs. 4.5%, logrank p&lt;0.0001, Fig. 1b), which was primarily attributed to fatal infections of fungal or bacterial origin. Of note, the ICAHT grading showed superior discrimination for severe infections (C-index 0.73, 95%CI: 0.67-0.78) compared to CTCAE grading (C-index 0.55, n.s.). Prolonged hospitalization was noted in case of severe ICAHT (median 21 vs. 16 days, p&lt;0.0001) and intensive care admission was more common (23% vs. 4%, p&lt;0.001). Finally, we observed inferior PFS (1-year PFS 35% vs. 51%, median 4 vs. 14 months, p&lt;0.0001) and inferior OS (1-year OS 52% vs. 73%, median 12 months vs. not-reached, p&lt;0.0001) in the patients that developed severe ICAHT. Conclusions: These data highlight the clinical relevance of the novel EHA/EBMT ICAHT grading system. Importantly, ICAHT severity was closely associated with transfusion dependence, increased infection incidence, and adverse treatment outcomes with high NRM. Taken together, these findings argue for reporting ICAHT grades in clinical trials evaluating established and novel CAR constructs.