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11 citation(s) found for "Hussain, Muhammad".

A Novel De Novo STAG1 Variant at the RAD21 Binding Interface Is Associated With Hypoglycemia, Recurrent Fever, Immunodeficiency and Features of Classical Cohesinopathies
Hussain, Hafiz Muhammad Jafar , Zimmermann, Michael T. , Farris, Joseph , Panwar, Deepak , Thurman, Sarah , Muthusamy, Karthik , Wick, Myra , Klee, Eric W. , Zimmermann, Michael T , Safgren, Stephanie L , Farris, Joseph D , Panwar, Deepak , Thurman, Sarah Allen , Muthusamy, Karthik , Urrutia, Raul , Vairo, Filippo , Klee, Eric W , Safgren, Stephanie L. , Urrutia, Raúl , Vairo, Filippo Pinto e

Clinical Genetics | September 9, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.1111/cge.70246 | PMID 42713681 Get It

ABSTRACT The cohesin complex, composed of SMC1, SMC3, RAD21, and STAG1/STAG2, is essential for chromosome cohesion, DNA repair, and transcriptional regulation. Pathogenic variants in cohesin components cause cohesinopathies. The classical characteristics of cohesinopathies include developmental delay (DD), intellectual disability (ID), feeding difficulties, hypotonia, short stature, hearing loss, and dysmorphic features. Here, we present a 5‐year‐old boy with classical cohesinopathy features, including DD/ID and feeding difficulties, along with non‐classical features such as hypoglycemia, recurrent fever, and immunodeficiency. Trio exome sequencing identified a novel de novo missense variant of uncertain significance (NM_005862.3:c.643G>A(p.Val215Ile)) in the STAG1 gene. The variant localizes to the RAD21 interaction interface, and molecular dynamics (MD) simulations revealed conformational changes comparable to other STAG1 variants reported as likely pathogenic in patients, supporting a deleterious effect which may disrupt the STAG1‐RAD21 interaction interface. This case expands the phenotypic and molecular spectrum of STAG1‐related cohesinopathy and advances our understanding of the disease mechanism.
Psychosocial Stressors and Psychiatric Morbidity Among Afghan Refugees Attending a Psychiatry Clinic in Islamabad, Pakistan: A Descriptive Cross-Sectional Study
Nadeem, Mahrukh , Khan, Ahmed Ali , Mansoor, Muhammad Hussain , Yousafzai, Abdul Wahab

No container title available | September 8, 2026 | Volume: No volume available | Issue: No issue available | Pages: No page available

10.64898/2026.09.03.26362105 Get It

ABSTRACT BACKGROUND War refugees are prone to psychiatric ailments due to multiple psychosocial stressors. Afghan refugees remain underrepresented in psychiatric studies. Therefore, a study exploring factors contributing to their mental health disorders is essential to guide rehabilitation efforts worldwide. METHODS This descriptive cross-sectional study evaluates the demographics, psychosocial stressors, psychiatric illnesses, and psychotropic drug use among Afghan refugees visiting the Psychiatry Outpatient Department (OPD) in Islamabad, Pakistan. Convenience sampling was employed on a sample population (n) of 75 participants. Data was collected via a structured questionnaire and analyzed using SPSS v21.0. Qualitative and quantitative variables were analyzed statistically. RESULTS Nearly 64%(n=48) of the participants were female. About 46.7%(n=35) of participants were uneducated, and 53.3%(n=40) were unemployed. 86.7%(n=65) of participants were married, while 2.7%(n=2) were divorced. 91%(n=61) of the married and divorced participants had an arranged marriage, 46.3%(n=31) had 5-8 children, and 67.2%(n=45) had experienced physical and/or emotional abuse. 74.7%(n=56) of the total participants reported a loss in the family, while 77.3%(n=58) had experienced trauma. 62.7%(n=47) had depression and associated psychotropic use, e.g., SSRIs (42.7%), TCAs (16%), and Benzodiazepines (13.3%). Alarmingly, 37.3%(n=28) reported a previous suicide attempt. CONCLUSION This study explores the psychosocial stressors faced by Afghan refugees in Pakistan, including displacement, abuse, trauma, and family/income loss. It emphasizes the importance of evidence-based psychiatric care, rehabilitative interventions, and culturally sensitive care to counter psychiatric morbidities and underscores the need for future research to improve the mental health of refugees globally.
Microfluidic synthesised PEGylated ascorbic acid-conjugated silver nanocarriers effectively downregulate oncogenes in invasive ductal carcinoma cells
Aftab, Ayesha , Hussain, Hafiz Muhammad Jafar , Ahmad, Bashir , Bashir, Shazia , Mansoor, Qaisar

Journal of Microencapsulation | July 25, 2026 | Volume: 43 | Issue: 4 | Pages: 425-446

10.1080/02652048.2026.2704961 | PMID 42501315 Get It

MON-828 Silent Risks and Rising Numbers: Mapping the Mortality Trends of Hypertension-Linked Endocrine Disorders in the U.S. (1999-2020)
Kakakhel, Mian Zahid Jan , Haider, Rabbia, Cheema, Shamikha , Irshad, Saba , Hussain, Muhammad Ubaid, Ullah, Aman , Khan, Anum Zia, Naveed, Farwa , Jawad, Hamna , Hemida, Mohamed Fawzi , Khawar, Muneeb , Ahmad, Husnain , Ahmed, Faizan , Alcaraz, Renato, Irshad, Sara Muhammad, Hussain, Muhammad Ubaid, Khan, Anum Zia, Naveed, Fatima , Qadeer, Abdul, Kirchoff, Robert W.

Journal of the Endocrine Society | October 23, 2025 | Volume: 9 | Issue: Supplement_1 | Pages: No page available

10.1210/jendso/bvaf149.1293 Get It

Abstract Disclosure: M. Kakakhel: None. R. Haider: None. S. Cheema: None. S.M. Irshad: None. M.U. Hussain: None. A. Ullah: None. A.Z. Khan: None. F. Naveed: None. H. Jawad: None. F. Naveed: None. M.F. Hemida: None. A. Qadeer: None. M. Khawar: None. H. Ahmad: None. F. Ahmed: None. R.W. Kirchoff: None. R. Alcaraz: None. Background: Hypertension has been a significant cause of morbidity and mortality for ages. Coupled with endocrine disorders, it poses a greater risk of indisposition to the U.S population. This CDC wonder analysis explores the trends and patterns of these disorders, stratified by states and rural/urban. Methods: To attain this objective, this retrospective study has utilized data from the Center for Disease Control and Prevention's Wide-Ranging Online Data for Epidemiologic Research (CDC WONDER) database to assess endocrine disorder-related mortality rates in the pediatric population from 1999 to 2011. Average Annual Percentage Change (AAPC) and Annual Percent Change (APC) were used to evaluate trends and produce age-adjusted mortality rates (AAMRs) per 100,000 people. Data was stratified by year, sex, race/ethnicity, state-wise and geographical regions. Statistical significance and confidence intervals were used to assess the reliability of the observed trends. Results: Between 1999 and 2020, 2383332 deaths in the United States were attributed to endocrine-related mortality with underlying hypertension. The Overall AAMR initially rose steeply from 10.7 in 1999 to 24.9 in 2001 (APC: 34.3; 95% CI: 9.5 to 56.7), followed by a period of further steady increase in AAMR till 36.5 in 2018 (APC: 1.6; 95% CI: 0.6 to 2.1). This progressive increase in AAMR then sharply spiked from 2018 onwards, reaching 51.7 in 2020 (APC: 18.1*; 95% CI: 9.3 to 23.5). Notable discrepancies were observed in urbanization. Non-metropolitan areas showed a higher AAMR (35.5) than metropolitan (31.5). State-level analysis revealed substantial heterogeneity, including Mississippi as the state of the highest AAMR (58.6). Conclusion: The concerning rise of AAMR in non-metropolitan areas and Mississippi calls for more targeted health-care policies. These findings underscore the need for geographically tailored public health interventions to address disparities in endocrine disorder-related mortality in these groups. Presentation: Monday, July 14, 2025
MON-827 Hypertension and Hormones: Decoding Mortality Trends Across the U.S. (1999-2020)
Kakakhel, Mian Zahid Jan , Cheema, Shamikha , Haider, Rabbia, Filal, Maryem, Ullah, Aman, Hussain, Muhammad Ubaid, Sadiq, Muhammad , Binashikhbubkr, Noof K. , Jawad, Hamna , Abdullah, Ahmed, Qadri, Maria , Qadeer, Abdul , Khawar, Muneeb , Ahmad, Husnain , Alcaraz, Renato, Ullah, Aman, Hussain, Muhammad Ubaid, Asghar, Tehreem , Arshad, Faraz , Qadri, Maria , Ahmed, Faizan

Journal of the Endocrine Society | October 23, 2025 | Volume: 9 | Issue: Supplement_1 | Pages: No page available

10.1210/jendso/bvaf149.1292 Get It

Abstract Disclosure: M. Kakakhel: None. S. Cheema: None. R. Haider: None. M. Filal: None. A. Ullah: None. M.U. Hussain: None. M.A. Sadiq: None. T. Asghar: None. F. Arshad: None. N.K. Binashikhbubkr: None. H. Jawad: None. A. Abdullah: None. M. Qadri: None. A. Qadeer: None. M. Khawar: None. H. Ahmad: None. F. Ahmed: None. R. Alcaraz: None. Background: Hypertension is a major global health issue, affecting nearly half of U.S. adults. It is a leading risk factor for cardiovascular diseases like stroke, heart attack, and heart failure. Additionally, it is often linked to endocrine disorders, which can result in secondary hypertension. Endocrine disorders contributed to a concerning 2,383,332 deaths in the United States between 1999 and 2020, with many of these individuals having underlying hypertension. Methods: Death certificate data for adults aged 25 and older were obtained from the CDC-WONDER database. Crude mortality rates (CMR) and age-adjusted mortality rates (AAMRs) per 100,000 individuals were computed. Temporal trends were analyzed by calculating the annual percent change (APC) and the average annual percent change (AAPC) in the rates using Joinpoint regression analysis. Results: The age-adjusted mortality rate (AAMR) rose sharply from 10.7 (95% CI:10.6-10.9) in 1999 to 24.9 (95% CI: 9.5 to 56.7) in 2001, then continued to increase steadily to 36.5 (95% CI: 0.6 to 2.1) by 2018. From 2018 onwards, the rate spiked significantly, reaching 51.7 (95% CI: 9.3 to 23.5) in 2020, which coincided with the COVID-19 pandemic. Men had higher overall AAMR i.e. 36.6 as compared to women 28.4 during the span of this study. Stratifying by race, Non-Hispanic Blacks or African Americans had the highest overall age-adjusted mortality rate at 64.4 vs non-Hispanic whites, who had the lowest rate at 27.6. Southern states exhibited the highest mortality rates among the census region followed by the Western, Midwestern, and Northeastern regions. In contrast, the Annual Mortality Rates (AAMRs) displayed similar patterns across all regions. Regarding age, people aged 85 and above had the highest mortality rate among all the age groups while ages 25-34 had the lowest. Conclusion: Endocrine disorders associated with underlying hypertension showed an increasing trend throughout the study period, peaking during the COVID-19 pandemic. These findings account for immediate targeted interventions directed at the most vulnerable demographic and geographical groups Presentation: Monday, July 14, 2025
Low Antigen Titre Disseminated Cryptococcosis in Immunocompromised Hosts: Two Challenging Case Reports
Agarwal, Srishty , Jones, Angela , Chitale, Rohit , Durvasula, Ravindra, Oring, Justin , Rathod, Vaishnavi M , Hussain, Muhammad , Chitale, Rohit A , Oring, Justin M, Agarwal, Srishty, Hussain, Muhammad

American Journal of Case Reports | May 22, 2025 | Volume: 26 | Issue: No issue available | Pages: No page available

10.12659/ajcr.946589 | PMID 40515382 Get It

Abstract WMP87: Primary Results From The CLEAR Study Of The Safety And Effectiveness Of The Neva Stent Retriever For Large Vessel Thrombectomy
Froehler, Michael T. , Maurer, Christoph A. , Kass‐Hout, Tareq , Zaidat, Osama, Sirvinskas, Audrius, Lin, Eugene , Taqi, Muhammad , Badruddin, Aamir , Miller, Timothy R. , Hussain, Muhammad Shazam , Woodward, Keith, Groden, Christoph , Consoli, Arturo , Ramsey, Christian N., Maud, Alberto , Brinjikji, Waleed , Bajrami, Arsida, Sahnoun, Maher , Gupta, Rishi , Ribó, Marc , Ribo, Marc , Yoo, Albert J. , Geyik, Serdar , Maurer, Christoph, Nogueira, Raul G. , Hanel, Ricardó A. , Pierot, Laurent, Spelle, Laurent , Lopes, Demetrius K. , Hassan, Ameer E , Blasco, Jordi , Siddiqui, Adnan H. , Haussen, Diogo C , Chaudry, Imran , Bentley, Joshua, Bajrami, Arsida , Fiehler, Jens

Stroke | February 2, 2023 | Volume: 54 | Issue: Suppl_1 | Pages: No page available

10.1161/str.54.suppl_1.wmp87 Get It

Despite the proven benefit of stent retrievers, challenges to rapid revascularization of large vessel occlusions (LVO) persist. Current stent retrievers have limited effectiveness for removing organized thrombi. The NeVa device is a novel stent retriever designed with openings in the basket cell structure (“drop zones”) intended to capture organized thrombi within the central scaffold during retrieval. Prospective, multicenter, open label, single arm, FDA-regulated IDE study to evaluate the performance of the NeVa device for recanalizing occluded intracranial vessels including ICA, M1/M2 MCA, and vertebrobasilar arteries, within 8 hours of onset. Primary endpoint was rate of eTICI 2b-3 within 3 NeVa passes, tested for non-inferiority against a performance goal of 72% with a margin of -10%. Additional efficacy endpoints included first pass effect to eTICI 2b-3 (FPE) and 90-day mRS 0-2. Primary safety endpoint was 90-day mortality. (ClinicalTrials.gov NCT04514562) (Site-adjudicated revascularization results are reported here. Final core lab results will be presented at the conference.) From April 1, 2021 to April 28, 2022, 139 subjects were enrolled at 25 centers in the US and Europe. Mean age was 67 ± 13 years; 47% were female. Median NIHSS score was 16 (IQR: 12-20). Occlusions were 14 (10%) ICA, 85 (61%) M1, 38 (27%) M2, 1 (1%) Basilar and 1 (1%) PCA. Mean time to first pass was 19 ± 12 minutes. eTICI 2b-3 within 3 NeVa passes occurred in 87.8% (122/139; CI 81.1%,92.7%; non-inferiority p<0.0001; post hoc superiority p=0.002, tested against performance goal of 72%). FPE (to eTICI 2b-3) was observed in 67.6% (94/139), with first pass to eTICI 2b67-3 in 61.2% (85/139) and to eTICI 2c-3 in 43.9% (61/139). Median number of passes was 1 (IQR 1-2). Final eTICI 2b-3 rate was 94.2% (131/139); final eTICI 2c-3 rate was 65.5% (91/139). Good outcome (90-day mRS 0-2) was seen in 62.6% (87/139) and was 74.4% in patients with FPE (70/94 vs. 17/45 (37.8%) without FPE; p<0.0001). Mortality was 9.4% (13/139) with sICH in 8 (5.8%) subjects. The NeVa device is effective and safe for revascularization of LVO strokes and demonstrates high first pass success in this international multicenter study. First pass reperfusion (eTICI 2b-3) was strongly associated with functional independence.
The Hydrogel Endovascular Aneurysm Treatment Trial (HEAT): A Randomized Controlled Trial of the Second-Generation Hydrogel Coil
Bendok, Bernard R. , Abi-Aad, Karl R., Ward, Jennifer , Kniss, Jason F , Kwasny, Mary , Rahme, Rudy J. , Aoun, Salah G. , Tecle, Najib E. El , Zammar, Samer G. , Aoun, Rami James N. , Patra, Devi Prasad, Raymond, Jean , Woo, Henry H. , Dabus, Guilherme , Milot, Geneviève , Scott, John A. , DeNardo, Andrew , Investigators, HEAT Study, Lavine, Sean D., Bozorgchami, Hormozd, Veznedaroglu, Erol, Albuquerque, Felipe C. , Fiorella, David, Boulos, Alan S. , Cortes, Maria, Kanaan, Hilal, Jindal, Gaurav , Klucznik, Richard , Kalmes, David, Xavier, Andrew, Hussain, Muhammad , Moran, Christopher J. , Adel, Brian van , Milot, Genevieve, Hirsch, Joshua A , Carpenter, Jeffrey , Powers, Ciarán J. , Luh, George, Tummala, Ramanchandra, Evans, Avery J. , Garg, Ankur, James, Roberts, Sauvageau, Eric , Fields, Jeremy D. , Grobelny, Thomas, Hartman, J., Patra, Devi P. , Bendok, Bernard R , Ward, Jennifer D, Ahmadieh, Tarek Y. El , Ansari, Sameer A. , Fiorella, David , Dabus, Guilherme C. , Almandoz, Josser E Delgado , Dashti, Shervin R , Investigators, HEAT Study, Deshaies, Eric Michael , Fiorella, David, Tawk, Rabih G. , Romero, Charles, Kelly, Michael , Chaudry, Imran , Pandey, Aditya S , Wang, Dennis Y.Q. , Milot, Genevieve, Jabbour, Pascal , Shankar, Jai , Patsalides, Athos T , Lee, Sung , James, Robert F. , Jayaraman, Mahesh V. , Satti, Sudhakar R

Neurosurgery | February 10, 2020 | Volume: 86 | Issue: 5 | Pages: 615-624

10.1093/neuros/nyaa006 | PMID 32078692 Get It

Abstract BACKGROUND Aneurysm recurrence after coiling has been associated with aneurysm growth, (re)hemorrhage, and a greater need for follow-up. The second-generation HydroCoil Embolic System (HES; MicroVention, Inc) consists of a platinum core with integrated hydrogel and was developed to reduce recurrence through enhancing packing density and healing within the aneurysm. OBJECTIVE To compare recurrence between the second-generation HES and bare platinum coil (BPC) in the new-generation Hydrogel Endovascular Aneurysm Treatment Trial (HEAT). METHODS HEAT is a randomized, controlled trial that enrolled subjects with ruptured or unruptured 3- to 14-mm intracranial aneurysms amenable to coiling. The primary endpoint was aneurysm recurrence using the Raymond-Roy scale. Secondary endpoints included minor and major recurrence, packing density, adverse events related to the procedure and/or device, mortality, initial complete occlusion, aneurysm retreatment, hemorrhage from target aneurysm during follow-up, aneurysm occlusion stability, and clinical outcome at final follow-up. RESULTS A total of 600 patients were randomized (HES, n = 297 and BPC, n = 303), including 28% with ruptured aneurysms. Recurrence occurred in 11 (4.4%) subjects in the HES arm and 44 (15.4%) subjects in the BPC arm ( P = .002). While the initial occlusion rate was higher with BPC, the packing density and both major and minor recurrence rates were in favor of HES. Secondary endpoints including adverse events, retreatment, hemorrhage, mortality, and clinical outcome did not differ between arms. CONCLUSION Coiling of small-to-medium aneurysms with second-generation HES resulted in less recurrence when compared to BPC, without increased harm. These data further support the use of the second-generation HES for the embolization of intracranial aneurysms. Video Abstract
Impact of Balloon Guide Catheter Use on Clinical and Angiographic Outcomes in the STRATIS Stroke Thrombectomy Registry
Zaidat, Osama O. , Mueller‐Kronast, Nils , Hassan, Ameer E , Jadhav, Ashutosh P. , Froehler, Michael T. , Aziz‐Sultan, Mohammad Ali , Klucznik, Richard , Hellinger, Frank R, Yavagal, Dileep R. , Yao, Tom L., Gupta, Rishi , Martin, Coleman, Bozorgchami, Hormozd, Kaushal, Ritesh , Gandhi, Ravi H. , Peterson, Eric C. , Given, Curtis A., Mehta, Brijesh , Deshmukh, Vivek R., Starkman, Sidney , Linfante, Italo , McPherson, Scott H., Kvamme, Peter , Grobelny, Thomas, Hussain, Muhammad Shazam , Thacker, Ike, Vora, Nirav , Monteith, Stephen J., Ecker, Robert D., Schirmer, Clemens M. , Sauvageau, Eric , Chebl, Alex , Derdeyn, Colin P. , Maidan, Lucian, Badruddin, Aamir , Siddiqui, Adnan H. , Dumont, Travis M., Alhajeri, Abdulnasser, Taqi, Muhammad , Asi, Khaled, Carpenter, Jeffrey , Boulos, Alan S. , Jindal, Gaurav , Puri, Ajit S , Robinson, David , Kallmes, David F. , Baxter, Blaise, Jumaa, Mouhammad , Sunenshine, Peter, Majjhoo, Aniel, English, Joey , Fessler, Richard D., Delgado-Almandoz, Josser, Martin, Jerry C., Liebeskind, David S. , Investigators, on behalf of the STRATIS, Liebeskind, David S. , Siddiqui, Adnan H , Hassan, Ameer E , Schirmer, Clemens M , Jadhav, Ashutosh P , Haussen, Diogo C , Jahan, Reza , Saver, Jeffrey L. , Nogueira, Raul G. , Dashti, Shervin R , Chen, Peng R , Chitale, Rohan V , Deshaies, Eric Michael , Suzuki, Shuichi , Investigators, on behalf of the STRATIS, Derdeyn, Colin P

Stroke | February 19, 2019 | Volume: 50 | Issue: 3 | Pages: 697-704

10.1161/strokeaha.118.021126 | PMID 30776994 Get It

Background and Purpose— Mechanical thrombectomy has been shown to improve clinical outcomes in patients with acute ischemic stroke. However, the impact of balloon guide catheter (BGC) use is not well established. Methods— STRATIS (Systematic Evaluation of Patients Treated With Neurothrombectomy Devices for Acute Ischemic Stroke) was a prospective, multicenter study of patients with large vessel occlusion treated with the Solitaire stent retriever as first-line therapy. In this study, an independent core laboratory, blinded to the clinical outcomes, reviewed all procedures and angiographic data to classify procedural technique, target clot location, recanalization after each pass, and determine the number of stent retriever passes. The primary clinical end point was functional independence (modified Rankin Scale, 0–2) at 3 months as determined on-site, and the angiographic end point was first-pass effect (FPE) success rate from a single device attempt (modified Thrombolysis in Cerebral Infarction, ≥2c) as determined by a core laboratory. Achieving modified FPE (modified Thrombolysis in Cerebral Infarction, ≥2b) was also assessed. Comparisons of clinical outcomes were made between groups and adjusted for baseline and procedural characteristics. All participating centers received institutional review board approval from their respective institutions. Results— Adjunctive technique groups included BGC (n=445), distal access catheter (n=238), and conventional guide catheter (n=62). The BGC group had a higher rate of FPE following first pass (212/443 [48%]) versus conventional guide catheter (16/62 [26%]; P =0.001) and distal access catheter (83/235 [35%]; P =0.002). Similarly, the BGC group had a higher rate of modified FPE (294/443 [66%]) versus conventional guide catheter (26/62 [42%]; P <0.001) and distal access catheter (129/234 [55%]; P =0.003). The BGC group achieved the highest rate of functional independence (253/415 [61%]) versus conventional guide catheter (23/55 [42%]; P =0.007) and distal access catheter (113/218 [52%]; P =0.027). Final revascularization and mortality rates did not differ across the groups. Conclusions— BGC use was an independent predictor of FPE, modified FPE, and functional independence, suggesting that its routine use may improve the rates of early revascularization success and good clinical outcomes. Clinical Trial Registration— URL: https://www.clinicaltrials.gov . Unique identifier: NCT02239640.
Interhospital Transfer Before Thrombectomy Is Associated With Delayed Treatment and Worse Outcome in the STRATIS Registry (Systematic Evaluation of Patients Treated With Neurothrombectomy Devices for Acute Ischemic Stroke)
Froehler, Michael T. , Zaidat, Osama O., Aziz‐Sultan, Mohammad Ali , Klucznik, Richard , Hellinger, Frank R, Yavagal, Dileep R. , Yao, Tom L., Liebeskind, David S, Jadhav, Ashutosh P. , Gupta, Rishi , Hassan, Ameer E , Martin, Coleman, Bozorgchami, Hormozd, Kaushal, Ritesh , Gandhi, Ravi H. , Peterson, Eric C. , Given, Curtis A., Mehta, Brijesh , Deshmukh, Vivek R., Starkman, Sidney , Linfante, Italo , McPherson, Scott H., Kvamme, Peter , Grobelny, Thomas, Hussain, Muhammad Shazam , Thacker, Ike, Vora, Nirav , Monteith, Stephen J., Ecker, Robert D., Schirmer, Clemens M. , Sauvageau, Eric , Abou‐Chebl, Alex, Derdeyn, Colin P. , Maidan, Lucian, Badruddin, Aamir , Siddiqui, Adnan H. , Dumont, Travis M., Alhajeri, Abdulnasser, Taqi, Muhammad , Asi, Khaled, Carpenter, Jeffrey , Boulos, Alan S. , Jindal, Gaurav , Puri, Ajit S , Robinson, David , Kallmes, David F. , Baxter, Blaise, Jumaa, Mouhammad , Sunenshine, Peter, Majjhoo, Aniel, English, Joey , Fessler, Richard D., Martin, Jerry C., Mueller‐Kronast, Nils , Liebeskind, David S. , Liebeskind, David S. , Siddiqui, Adnan H , Hassan, Ameer E , Schirmer, Clemens M , Saver, Jeffrey L. , Jahan, Reza , Haussen, Diogo C , Nogueira, Raul G. , Dashti, Shervin R , Chen, Peng R , Chitale, Rohan V , Deshaies, Eric Michael , Suzuki, Shuichi , Almandoz, Josser E Delgado , Jadhav, Ashutosh P , Derdeyn, Colin P

Circulation | September 25, 2017 | Volume: 136 | Issue: 24 | Pages: 2311-2321

10.1161/circulationaha.117.028920 | PMID 28943516 Get It

Background: Endovascular treatment with mechanical thrombectomy (MT) is beneficial for patients with acute stroke suffering a large-vessel occlusion, although treatment efficacy is highly time-dependent. We hypothesized that interhospital transfer to endovascular-capable centers would result in treatment delays and worse clinical outcomes compared with direct presentation. Methods: STRATIS (Systematic Evaluation of Patients Treated With Neurothrombectomy Devices for Acute Ischemic Stroke) was a prospective, multicenter, observational, single-arm study of real-world MT for acute stroke because of anterior-circulation large-vessel occlusion performed at 55 sites over 2 years, including 1000 patients with severe stroke and treated within 8 hours. Patients underwent MT with or without intravenous tissue plasminogen activator and were admitted to endovascular-capable centers via either interhospital transfer or direct presentation. The primary clinical outcome was functional independence (modified Rankin Score 0–2) at 90 days. We assessed (1) real-world time metrics of stroke care delivery, (2) outcome differences between direct and transfer patients undergoing MT, and (3) the potential impact of local hospital bypass. Results: A total of 984 patients were analyzed. Median onset-to-revascularization time was 202.0 minutes for direct versus 311.5 minutes for transfer patients ( P <0.001). Clinical outcomes were better in the direct group, with 60.0% (299/498) achieving functional independence compared with 52.2% (213/408) in the transfer group (odds ratio, 1.38; 95% confidence interval, 1.06–1.79; P =0.02). Likewise, excellent outcome (modified Rankin Score 0–1) was achieved in 47.4% (236/498) of direct patients versus 38.0% (155/408) of transfer patients (odds ratio, 1.47; 95% confidence interval, 1.13–1.92; P =0.005). Mortality did not differ between the 2 groups (15.1% for direct, 13.7% for transfer; P =0.55). Intravenous tissue plasminogen activator did not impact outcomes. Hypothetical bypass modeling for all transferred patients suggested that intravenous tissue plasminogen activator would be delayed by 12 minutes, but MT would be performed 91 minutes sooner if patients were routed directly to endovascular-capable centers. If bypass is limited to a 20-mile radius from onset, then intravenous tissue plasminogen activator would be delayed by 7 minutes and MT performed 94 minutes earlier. Conclusions: In this large, real-world study, interhospital transfer was associated with significant treatment delays and lower chance of good outcome. Strategies to facilitate more rapid identification of large-vessel occlusion and direct routing to endovascular-capable centers for patients with severe stroke may improve outcomes. Clinical Trial Registration: URL: https://www.clinicaltrials.gov . Unique identifier: NCT02239640.