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Cerhan, Jane H.

https://orcid.org/0000-0002-3079-373X

Mayo Clinic

Mayo Clinic

Citations 21

CODEL (Alliance-N0577; EORTC-26081/22086; NRG-1071; NCIC-CEC-2): Phase III Randomized Study of RT vs. RT+TMZ vs. TMZ for Newly Diagnosed 1p/19q-Codeleted Anaplastic Oligodendroglial Tumors. Analysis of Patients Treated on the Original Protocol Design (PL02
Jaeckle, Kurt A. , Vogelbaum, Michael A. , Anderson, S. Keith , Aldape, Kenneth , Cerhan, Jane H. , Nordstrom, Donald G., Jenkins, Robert B. , Raizer, Jeffrey J. , Flynn, Patrick , Dhermain, F., Cairncross, J. G., Brown, Paul D. , Ballman, Karla V. , Giannini, Caterina , Wefel, Jeffrey S. , Klein, Martin , Bent, Martin J. van den , Wick, Wolfgang , Flynn, Patrick, Galanis, Evanthia

Neurology | December 7, 2023 | Volume: 86 | Issue: 16_supplement | Pages: No page available

10.1212/wnl.86.16_supplement.pl02.005 Get It

Longitudinal cognitive function and brain metabolites in women receiving chemotherapy for stage 1 to 3 breast cancer: Observational study
Beyer, Johanna , Couch, Ronan E. , Ruddy, Kathryn J. , Zeydan, Burcu , Tosakulwong, Nirubol , Lesnick, Timothy G. , Novotny, Paul J. , Kohli, Sadhna , Cerhan, Jane H. , Pruthi, Sandhya , Kantarci, Kejal , Beyer, Joana , Couch, Ronan , Kara, Firat , Pruthi, Sandhya , Kantarci, Kejal , Zeydan, Burcu , Kara, Firat

Medicine | October 20, 2023 | Volume: 102 | Issue: 42 | Pages: e35524

10.1097/md.0000000000035524 Get It

Few proton magnetic resonance spectroscopy studies have explored chemotherapy-related biochemical changes in brain regions. This observational study aimed to longitudinally assess short-term cognitive changes and brain metabolite concentrations in women undergoing chemotherapy for breast cancer. We analyzed 11 women with newly diagnosed stage 1 to 3 breast cancer. Patients were evaluated via objective cognitive testing, and patient self-report tests. Patients were examined using single voxel proton magnetic resonance spectroscopy in the medial frontal cortex, posterior cingulate gyrus, and left thalamus at baseline and after the completion of chemotherapy on a 1.5 Tesla scanner. At the posttreatment evaluation as compared to baseline, 7 of the 10 (70%) patients reported worsening memory on the MD Anderson symptom inventory (annualized change = 1.82 ± 2.88, P = .08), while the delayed recall raw score of the Rey Osterrieth complex figure test did not change from pre- to post-chemotherapy (mean annualized change = 5.00 ± 14.38, P = .30). The annualized change in the creatine concentration in the posterior cingulate gyrus was statistically significant. The annualized change in the MD Anderson symptom inventory was negatively correlated with the annualized change in the medial frontal N-acetylaspartate (Spearman correlation coefficient [rho] = −0.78, P = .01) and positively correlated with the annualized change in the posterior cingulate gyrus creatine (rho = 0.66, P = .04). Annualized changes in the Rey Osterrieth complex figure test were positively correlated with annualized changes in choline (rho = 0.83, P = .01) in the medial frontal cortex, choline (rho = 0.76, P = .04) in the left thalamus, and creatine (rho = 0.73, P = .02) in the medial frontal cortex. Our data suggest that chemotherapy may lead to the worsening of self-reported memory function, which is associated with alterations in brain metabolites.
Impact of Ketamine versus Propofol for Anesthetic Induction on Cognitive Dysfunction, Delirium, and Acute Kidney Injury Following Cardiac Surgery in Elderly, High-Risk Patients
Wittwer, Erica D. , Schroeder, Darrell R. , Mauermann, William J., Cerhan, Jane H. , Schroeder, Darrell , Cerhan, James R. , Schaff, Hartzell V.

Annals of Cardiac Anaesthesia | July 10, 2023 | Volume: 26 | Issue: 3 | Pages: 274-280

10.4103/aca.aca_106_22 Get It

Objective: Evaluate the effects of ketamine versus propofol when used for induction of anesthesia in elderly, high-risk cardiac surgical patients on postoperative complications including cognitive dysfunction, delirium, and acute kidney injury. Methods: Prospective, randomized study performed at a tertiary medical center. A total of 52 patients aged ≥70 and older presenting for complex cardiac surgery were randomized to receive either ketamine or propofol for induction of anesthesia. Patients underwent a battery of cognitive testing preoperatively and postoperatively and the incidence of delirium and acute kidney injury were measured. Norepinephrine (NEE) equivalents following induction were assessed for each group. Results: A total of 49 patients were included, 25 in the ketamine group and 24 in the propofol group with 3 patients excluded from the analysis. No difference was found between groups in either postoperative cognitive dysfunction or delirium incidence. Acute kidney injury occurred in 6 (24%) patients in the ketamine group in 12 (50%) patients in the propofol group, but the difference did not meet statistical significance (P = 0.08; Relative Risk = 2.1, 95% CI 0.9–4.7). NEE equivalents were lower in the ketamine group, 9.6 ± 22.2 versus 32.7 ± 46.0, P < 0.03. Conclusions: The use of ketamine versus propofol for induction of anesthesia did not impact the incidence of postoperative cognitive dysfunction or delirium. Twice as many patients in the propofol group developed acute kidney injury, although not reaching statistical significance and warranting further investigation. In elderly, high-risk patients, ketamine was associated with a significantly reduced need for vasopressor support following induction.
Association of circulating markers with cognitive decline after radiation therapy for brain metastasis
Huntoon, Kristin , Anderson, S. Keith , Twohy, Erin , Dooley, Katharine , Jiang, Wen , An, Yi , Qie, Yaqing, Ross, Owen A. , Cerhan, Jane H. , Whitton, Anthony , Greenspoon, Jeffrey , Ashman, Jonathan B. , Bahary, Jean-Paul , Urbanic, James J., Farace, Elana, Khuntia, Deepak , Laack, Nadia N., Brown, Paul D. , Jiang, Wen , Ross, Owen A , Dooley, Katharine , Ballman, Karla V. , Li, Jing , Roemeling, Christina A. Von , Parney, Ian F. , Hadjipanayis, Costas G. , Roberge, David , Kim, Betty Y.S.

Neuro-Oncology | December 6, 2022 | Volume: 25 | Issue: 6 | Pages: 1123-1131

10.1093/neuonc/noac262 Get It

AbstractBackgroundA recent phase III trial (NCT01372774) comparing use of stereotactic radiosurgery [SRS] versus whole-brain radiation therapy [WBRT] after surgical resection of a single brain metastasis revealed that declines in cognitive function were more common with WBRT than with SRS. A secondary endpoint in that trial, and the primary objective in this secondary analysis, was to identify baseline biomarkers associated with cognitive impairment after either form of radiotherapy for brain metastasis. Here we report our findings on APOE genotype and serum levels of associated proteins and their association with radiation-induced neurocognitive decline.MethodsIn this retrospective analysis of prospectively collected samples from a completed randomized clinical trial, patients provided blood samples every 3 months that were tested by genotyping and enzyme-linked immunosorbent assay, and results were analyzed in association with cognitive impairment.ResultsThe APOE genotype was not associated with neurocognitive impairment at 3 months. However, low serum levels of ApoJ, ApoE, or ApoA protein (all P &lt; .01) and higher amyloid beta (Aβ 1–42) levels (P = .048) at baseline indicated a greater likelihood of neurocognitive decline at 3 months after SRS, whereas lower ApoJ levels were associated with decline after WBRT (P = .014).ConclusionsPatients with these pretreatment serum markers should be counseled about radiation-related neurocognitive decline.
Association of Long-term Outcomes With Stereotactic Radiosurgery vs Whole-Brain Radiotherapy for Resected Brain Metastasis
Klamer, Brett , Brown, Paul D. , Cerhan, Jane H. , Anderson, S. Keith , Carrero, Xiomara W., Whitton, Anthony , Greenspoon, Jeffrey , Ashman, Jonathan B. , Bahary, Jean-Paul , Urbanic, James J., Barker, Fred G., Farace, Elana, Khuntia, Deepak , Buckner, Jan C. , Laack, Nadia N I, Palmer, Joshua D. , Ballman, Karla V. , Parney, Ian F. , Laack, Nadia N. , Hadjipanayis, Costas G. , Giannini, Caterina , Galanis, Evanthia , Roberge, David

JAMA Oncology | October 20, 2022 | Volume: 8 | Issue: 12 | Pages: 1809

10.1001/jamaoncol.2022.5049 Get It

Importance Long-term outcomes of radiotherapy are important in understanding the risks and benefits of therapies for patients with brain metastases. Objective To determine how the use of postoperative whole-brain radiotherapy (WBRT) or stereotactic radiosurgery (SRS) is associated with quality of life (QOL), cognitive function, and intracranial tumor control in long-term survivors with 1 to 4 brain metastases. Design, Setting, and Participants This secondary analysis of a randomized phase 3 clinical trial included 48 institutions in the US and Canada. Adult patients with 1 resected brain metastases but limited to those with 1 to 4 brain metastasis were eligible. Unresected metastases were treated with SRS. Long-term survivors were defined as evaluable patients who lived longer than 1 year from randomization. Patients were recruited between July 2011 and December 2015, and data were first analyzed in February 2017. For the present study, intracranial tumor control, cognitive deterioration, QOL, and cognitive outcomes were measured in evaluable patients who were alive at 12 months from randomization and reanalyzed in June 2017. Interventions Stereotactic radiosurgery or WBRT. Main Outcomes and Measures Intracranial tumor control, toxic effects, cognitive deterioration, and QOL. Results Fifty-four patients (27 SRS arm, 27 WBRT arm; female to male ratio, 65% vs 35%) were included for analysis with a median follow-up of 23.8 months. Cognitive deterioration was less frequent with SRS (37%-60%) compared with WBRT (75%-91%) at all time points. More patients declined by 2 or more standard deviations (SDs) in 1 or more cognitive tests for WBRT compared with SRS at 3, 6, and 9 months (70% vs 22%, 46% vs 19%, and 50% vs 20%, respectively). A 2 SD decline in at least 2 cognitive tests was associated with worse 12-month QOL in emotional well-being, functional well-being, general, additional concerns, and total scores. Overall QOL and functional independence favored SRS alone for categorical change at all time points. Total intracranial control for SRS alone vs WBRT at 12 months was 40.7% vs 81.5% (difference, −40.7; 95% CI, −68.1% to −13.4%), respectively. Data were first analyzed in February 2017. Conclusions and Relevance The use of SRS alone compared with WBRT resulted in less cognitive deterioration among long-term survivors. The association of late cognitive deterioration with WBRT was clinically meaningful. A significant decline in cognition (2 SD) was associated with overall QOL. However, intracranial tumor control was improved with WBRT. This study provides detailed insight into cognitive function over time in this patient population. Trial Registration ClinicalTrials.gov Identifier: NCT01372774 ; ALLIANCE/CCTG: N107C/CEC.3 (Alliance for Clinical Trials in Oncology/Canadian Cancer Trials Group)
CTNI-01. EFFECT OF STEREOTACTIC RADIOSURGERY COMPARED TO WHOLE-BRAIN RADIOTHERAPY FOR LIMITED BRAIN METASTASIS ON LONG TERM COGNITION AND QUALITY OF LIFE: A POOLED ANALYSIS OF RANDOMIZED CLINICAL TRIALS
Klamer, Brett , Brown, Paul D. , Cerhan, Jane H. , Anderson, S. Keith , Whitton, Anthony , Greenspoon, Jeffrey , Burri, Stuart H., Pollock, Bruce E. , Laack, Nadia N., Ashman, J.B., Bahary, Jean-Paul , Barker, Fred G., Asher, Anthony L. , Palmer, Joshua D. , Ballman, Karla V. , Chung, Caroline , Parney, Ian F. , Stieber, Volker W. , Galanis, Evanthia , Roberge, David

Neuro-Oncology | December 4, 2020 | Volume: 22 | Issue: Supplement_2 | Pages: ii40-ii41

10.1093/neuonc/noaa215.168 Get It

Abstract PURPOSE We investigated the long term impact of SRS and WBRT in two large prospective phase III trials. METHODS Patients with 1–4 BMs +/- resection were randomized to SRS or WBRT. Cognitive deterioration was a drop of &gt;1 standard deviation from baseline in &gt;2/6 cognitive measures (CM). Quality of life (QOL) scores were scored 0–100 point scale. CM and QOL scores were modeled using baseline adjusted Linear Mixed Models (LMM) with uncorrelated random intercept for subject and random slopes for time. Differences over time between groups and the effect of &gt;2 cognitive scores with &gt;2 SD change from baseline were assessed. RESULTS 88 patients were included with median follow up of 24 months. We observed decreasing CM over time (SRS: 4/6; WBRT: 5/6). Mean CM was significantly higher in SRS for Total recall and Delayed Recall at 3, 6, 9, 12 months. More patients in WBRT arm declined 1 SD in &gt;1 and &gt;2 CM at the 3, 6, 9, and 12 months. A 1 SD decline in &gt;3 CM at 1 year was 21% SRS vs 47% WBRT (p=0.02). SRS had fewer patients with a 2 SD decline in &gt;1 CM at every time point. SRS had fewer patients with a 2 SD decline at &gt;2 and &gt;3 CM. WBRT had lower QOL at 3 months, but switched to SRS having lower QOL at 24 months for PWB, EWB, FWB, FactG, BR, and FactBR (p&lt; 0.05). A 2 SD decline in cognition decreased mean FWB by 6.4 units (95% CI: -11, -1.75; p=0.007) and decreased QOL by 5.1 units (95% CI: -7.7, -2.5; p&lt; 0.001). CONCLUSIONS We report the first pooled prospective study demonstrating the long term outcomes of patients with BMs after cranial radiation. WBRT was associated with worse cognitive outcomes. Impaired cognition is associated with worse QOL.
25. EFFECT OF STEREOTACTIC RADIOSURGERY COMPARED TO WHOLE-BRAIN RADIOTHERAPY FOR LIMITED BRAIN METASTASIS ON LONG TERM COGNITION AND QUALITY OF LIFE: A POOLED ANALYSIS OF NCCTG N107C/CEC.3 AND N0574 (ALLIANCE) RANDOMIZED CLINICAL TRIALS
Klamer, Brett , Brown, Paul D. , Cerhan, Jane H. , Anderson, Keith, Whitton, Anthony , Greenspoon, Jeffrey , Burri, Stuart H., Pollock, Bruce E. , Laack, Nadia N., Ashman, J.B., Bahary, Jean-Paul , Barker, Fred G., Asher, Anthony L. , Palmer, Joshua D. , Ballman, Karla V. , Chung, Caroline , Parney, Ian F. , Stieber, Volker W. , Galanis, Evanthia , Roberge, David

Neuro-Oncology Advances | August 4, 2020 | Volume: 2 | Issue: Supplement_2 | Pages: ii4-ii4

10.1093/noajnl/vdaa073.015 Get It

Abstract PURPOSE We investigated the long term impact of SRS and WBRT in two large prospective phase III trials. METHODS Patients with 1–4 BMs +/- resection were randomized to SRS or WBRT. Cognitive deterioration was a drop of &gt;1 standard deviation from baseline in &gt;2/6 cognitive measures (CM). Quality of life (QOL) scores were scored 0–100 point scale. CM and QOL scores were modeled using baseline adjusted Linear Mixed Models (LMM) with uncorrelated random intercept for subject and random slopes for time. Differences in trend over time between groups and the effect of &gt;2 cognitive scores with &gt;2 SD change from baseline were assessed. RESULTS 88 patients were included with median follow up of 24 months. We observed decreasing CM over time (SRS: 4/6; WBRT: 5/6). Mean CM was significantly higher in SRS for Total recall and Delayed Recall at 3, 6, 9, 12 months. More patients in WBRT arm declined 1 SD in &gt;1 and &gt;2 CM at the 3, 6, 9, and 12 months. A 1 SD decline in &gt;3 CM at 1 year was 21% SRS vs 47% WBRT (p=0.02). SRS had fewer patients with a 2 SD decline in &gt;1 CM at every time point. SRS had fewer patients with a 2 SD decline at &gt;2 and &gt;3 CM. WBRT had lower QOL at 3 months, but switched to SRS having lower QOL at 24 months for PWB, EWB, FWB, FactG, BR, and FactBR (p&lt;0.05). A 2 SD decline in cognition decreased mean FWB by 6.4 units (95% CI: -11, -1.75; p=0.007) and decreased QOL by 5.1 units (95% CI: -7.7, -2.5; p&lt;0.001). CONCLUSIONS We report the first pooled prospective study demonstrating the long term outcomes of patients with BMs after cranial radiation. WBRT was associated with worse cognitive outcomes. Impaired cognition is associated with worse QOL.
CODEL: phase III study of RT, RT + TMZ, or TMZ for newly diagnosed 1p/19q codeleted oligodendroglioma. Analysis from the initial study design
Jaeckle, Kurt A. , Ballman, Karla V. , Bent, Martin J. van den , Giannini, Caterina , Galanis, Evanthia , Brown, Paul D. , Jenkins, Robert B. , Cairncross, J. Gregory , Wick, Wolfgang , Weller, Michael , Aldape, Kenneth , Anderson, S. Keith , Cerhan, Jane H. , Klein, Martin , Schiff, David , Raizer, Jeffrey J. , Dhermain, F., Nordstrom, Donald G., Flynn, Patrick J. , Vogelbaum, Michael A. , Dixon, Jesse G. , Weller, Michael , van den Bent, Martin J , Galanis, Evanthia , Giannini, Caterina , Wick, Wolfgang , Jaeckle, Kurt A , Ballman, Karla , Dixon, Jesse G , Dixon, Jesse G , Wefel, Jeffrey S. , Grossman, Stuart A.

Neuro-Oncology | July 13, 2020 | Volume: 23 | Issue: 3 | Pages: 457-467

10.1093/neuonc/noaa168 Get It

Abstract Background We report the analysis involving patients treated on the initial CODEL design. Methods Adults (&gt;18) with newly diagnosed 1p/19q World Health Organization (WHO) grade III oligodendroglioma were randomized to radiotherapy (RT; 5940 centigray ) alone (arm A); RT with concomitant and adjuvant temozolomide (TMZ) (arm B); or TMZ alone (arm C). Primary endpoint was overall survival (OS), arm A versus B. Secondary comparisons were performed for OS and progression-free survival (PFS), comparing pooled RT arms versus TMZ-alone arm. Results Thirty-six patients were randomized equally. At median follow-up of 7.5 years, 83.3% (10/12) TMZ-alone patients progressed, versus 37.5% (9/24) on the RT arms. PFS was significantly shorter in TMZ-alone patients compared with RT patients (hazard ratio [HR] = 3.12; 95% CI: 1.26, 7.69; P = 0.014). Death from disease progression occurred in 3/12 (25%) of TMZ-alone patients and 4/24 (16.7%) on the RT arms. OS did not statistically differ between arms (comparison underpowered). After adjustment for isocitrate dehydrogenase (IDH) status (mutated/wildtype) in a Cox regression model utilizing IDH and RT treatment status as covariables (arm C vs pooled arms A + B), PFS remained shorter for patients not receiving RT (HR = 3.33; 95% CI: 1.31, 8.45; P = 0.011), but not OS ((HR = 2.78; 95% CI: 0.58, 13.22, P = 0.20). Grade 3+ adverse events occurred in 25%, 42%, and 33% of patients (arms A, B, and C). There were no differences between arms in neurocognitive decline comparing baseline to 3 months. Conclusions TMZ-alone patients experienced significantly shorter PFS than patients treated on the RT arms. The ongoing CODEL trial has been redesigned to compare RT + PCV versus RT + TMZ.
A phase III randomized, double-blind placebo controlled study of armodafinil (Nuvigil) to reduce cancer-related fatigue in patients with high-grade glioma (Alliance A221101).
Porter, Alyx B. , Liu, Heshan , Kohli, Sadhna , Cerhan, Jane H. , Sloan, Jeff A. , Loprinzi, Charles L. , Jaeckle, Kurt A. , Brown, Paul D. , McMurray, Ryan P. , Le‐Rademacher, Jennifer , Villano, John L. , Kizilbash, Sani H. , Mehta, Minesh P.

Journal of Clinical Oncology | May 25, 2020 | Volume: 38 | Issue: 15_suppl | Pages: 12007-12007

10.1200/jco.2020.38.15_suppl.12007 Get It

12007 Background: Up to 96% of patients with high grade glioma (HGG) report moderate to severe fatigue. Armodafinil, the R-enantiomer of modafinil, is a psychostimulant with low potential for abuse that has shown potential for improving severe fatigue in HGG patients. Methods: In this phase III double blinded placebo-controlled study, adults with HGG and moderate to severe fatigue, > 4 weeks after completing radiotherapy, were randomized to receive armodafinil daily (150 mg or 250 mg) or placebo for a total of 8 weeks. The primary outcome was efficacy in treating severe fatigue. Secondary outcomes included evaluation of tolerability, neurocognitive function, and quality of life. Patients were evaluated at baseline, 4 and 8 weeks. Results: A total of 328 patients were enrolled between 6/3/13-3/1/19. There were 103 (150 mg arm), 97 (250 mg arm) and 97 (placebo arm) evaluable patients with primary endpoint data available. The median age was 60 years (20-85) with a median Brief Fatigue Inventory (BFI) worst fatigue score of 8 (6-10). 60.3% were male, 80.5% received concomitant chemotherapy, and 39.7% were on corticosteroids. The global fatigue score at end of weeks 4 and 8 were lower than at baseline (p<0.0001) and in the 250 mg arm than placebo (p=0.0356) and was higher for corticosteroid users than non-users (p=0.0002). There was no statistically significant difference for clinically meaningful improvement in BFI usual fatigue score from baseline to end of week 8 between the three arms (p=0.9601). Patients reported an improvement in concentration at week 4 from baseline on the 150 mg arm(P=0.0311). There was no statistically significant difference on neurocognitive tests from baseline to end of week 4 (p>0.05) or week 8 (p>0.05) between arms. More patients reported insomnia on the 250 mg arm (p=0.0083). Conclusions: There is no meaningful benefit of the use of armodafinil to reduce moderate to severe fatigue in patients with HGG. In certain cases there may be benefit of armodafinil 150 mg to aid concentration without the risk of insomnia.Support: UG1CA189823;U10CA180868 (NRG). Clinical trial information: NCT01781468 .
Randomized Placebo‐Controlled Trial of Intravenous Immunoglobulin in Autoimmune LGI1/CASPR2 Epilepsy
Dubey, Divyanshu , Gadoth, Avi , Ζεκερίδου, Αναστασία , Chiriboga, Sebastian A. Lopez, Devine, Michelle F., Cerhan, Jane H. , Dunlay, Katie, Sagen, Jessica, Ramberger, Melanie , Waters, Patrick , Irani, Sarosh R. , Pittock, Sean J. , Dubey, Divyanshu , Britton, Jeffrey, Lopez Chiriboga, Sebastian A, Devine, Michelle , Irani, Sarosh R , Pittock, S J , Dubey, Divyanshu , Waters, Patrick J , Dubey, Divyanshu , Britton, Jeffrey W. , McKeon, Andrew , Chiriboga, Sebastian López

Annals of Neurology | November 29, 2019 | Volume: 87 | Issue: 2 | Pages: 313-323

10.1002/ana.25655 Get It

ObjectiveDrug‐resistant seizures are common in patients with leucine‐rich, glioma‐inactivated 1 (LGI1)‐IgG associated and contactin‐associated protein‐like 2 (CASPR2)‐IgG associated encephalitis. We performed the first randomized double‐blind placebo‐controlled trial to evaluate efficacy of intravenous immunoglobulin (IVIG) in reducing seizure frequency.MethodsOur enrollment goal was 30 LGI1/CASPR2‐IgG–seropositive adult patients with ≥2 seizures per week. Patients were randomized to receive IVIG (0.5g/kg day 1, 1g/kg day 2, 0.6g/kg weeks 3 and 5) or volume‐matched intravenous normal saline. Following the blinded phase, the nonresponders in the placebo group received IVIG. The primary clinical outcome was 50% reduction in seizure frequency from baseline to 5 weeks.ResultsAfter enrollment of 17 patients (LGI1‐IgG, 14; CASPR2‐IgG, 3) over 34 months, the study was terminated due to slow enrollment. Six of 8 patients in the IVIG group were responders, compared to 2 of 9 in the placebo group (p = 0.044, odds ratio = 10.5, 95% confidence interval = 1.1–98.9). For the LGI1‐IgG seropositive subgroup, 6 of 8 patients in the IVIG group were responders, compared to zero of 6 in the placebo group. Two LGI1‐IgG–seropositive patients receiving IVIG, but none receiving placebo, were seizure‐free at the end of the blinded phase. Four of the 6 patients entering the open‐label IVIG arm reported ≥50% reduction in seizure frequency. There were no correlations with LGI1/CASPR2‐IgG1–4 subclasses.InterpretationSuperiority of IVIG to placebo reached statistical significance for the primary endpoint for all patients and the subset with LGI1‐IgG. These results have to be interpreted with the caveat that the study did not reach its originally selected sample size. ANN NEUROL 2020;87:313–323