Evidence map›Paper›PMID 27166358›Full record

Trial reportBlood2016

Persistence of long-lived plasma cells and humoral immunity in individuals responding to CD19-directed CAR T-cell therapy.

Vijay G Bhoj, Dimitrios Arhontoulis, Gerald Wertheim, James Capobianchi, Colleen A Callahan, Christoph T Ellebrecht, Amrom E Obstfeld, Simon F Lacey, Jan J Melenhorst, Farzana Nazimuddin and 10 more

Open access · bronzeAbstract readClinical TrialMulticenter Study
In one paragraph

Trial report in Blood, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 155 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
155citing papers in PubMed, 2 pooled it
11.8field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

155 citing papers in PubMed, 2 syntheses or guidelines pooled it, 260 citations in OpenAlex.

  1. Pooled it
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  16. Can we cure autoimmunity?Current opinion in immunology · 2026
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95 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

20 authors at 2 institutions in 1 country.

Vijay G BhojDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;ORCID 0000-0003-2857-4092
Dimitrios ArhontoulisDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Gerald WertheimDepartment of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia, Philadelphia, PA;
James CapobianchiDepartment of Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Colleen A CallahanDivision of Bone Marrow Transplantation, Children's Hospital of Philadelphia, Philadelphia, PA; and.
Christoph T EllebrechtDepartment of Dermatology and.
Amrom E ObstfeldDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Simon F LaceyDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Jan J MelenhorstDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Farzana NazimuddinDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Wei-Ting HwangDepartment of Biostatistics and Epidemiology, University of Pennsylvania, Philadelphia, PA.
Shannon L MaudeDivision of Bone Marrow Transplantation, Children's Hospital of Philadelphia, Philadelphia, PA; and.
Mariusz A WasikDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;ORCID 0000-0002-1988-3670
Adam BaggDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Stephen SchusterDepartment of Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Michael D FeldmanDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
David L PorterDepartment of Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Stephen A GruppDivision of Bone Marrow Transplantation, Children's Hospital of Philadelphia, Philadelphia, PA; and.
Carl H JuneDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;
Michael C MiloneDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine of the University of Pennsylvania, Philadelphia, PA;ORCID 0000-0002-1580-9844
University of Pennsylvania · USChildren's Hospital of Philadelphia · US

Funding

UNIVERSITY OF PENNSYLVANIA CAN CTR SUPPORT GRANTP30CA016520 · NCI · UNIVERSITY OF PENNSYLVANIA · PI Robert H. Vonderheide · 1985 to 2026
$222.3M
IMMUNOBIOLOGY OF NORMAL AND NEOPLASTIC LYMPHOCYTEST32CA009140 · NCI · UNIVERSITY OF PENNSYLVANIA · PI Malay Haldar, WARREN S PEAR · 1985 to 2026
$16.1M
Mentored career development in clinical research in non-malignant hematologyK12HL087064 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI ABRAMS, CHARLES S. · 2006 to 2016
$3.9M
CD19 Directed CAR TherapyR01CA165206 · NCI · UNIVERSITY OF PENNSYLVANIA · PI JUNE, CARL H., PORTER, DAVID L · 2012 to 2016
$2.2M
USE OF mTOR INHIBITORS IN B CELL LEUKEMIAR01CA102646 · NCI · CHILDREN'S HOSP OF PHILADELPHIA · PI GRUPP, STEPHAN A. · 2005 to 2009
$1.6M
Determinants of Relapse Risk After BMT for ALLR01CA116660 · NCI · CHILDREN'S HOSP OF PHILADELPHIA · PI GRUPP, STEPHAN A. · 2007 to 2011
$1.5M
NCI NIH HHS P30 CA016520NCI NIH HHS R01 CA102646NCI NIH HHS R01 CA116660NCI NIH HHS R01 CA165206NCI NIH HHS T32 CA009140NHLBI NIH HHS K12 HL087064
6 · The paper itself

Abstract

The mechanisms underlying the maintenance of long-lasting humoral immunity are not well understood. Studies in mice indicate that plasma cells (PCs) can survive up to a lifetime, even in the absence of regeneration by B cells, implying the presence of long-lived PCs as a mechanism for long-lasting immunity. Evidence from humans treated with anti-CD20, which depletes circulating B cells, also suggests B-cell-independent long-term survival of some PCs. On the other hand, antibody responses may be sustained solely by short-lived PCs with repopulation from clonally related memory B cells. To explore PC longevity and humoral immunity in humans, we investigated the fate of PCs and their antibodies in adult and pediatric patients who received chimeric antigen receptor-based adoptive T-cell immunotherapy targeting CD19 to treat B-cell lineage malignancies (CTL019). Treatment with CTL019 is frequently associated with B-cell aplasia that can persist for years. Serum antibody titers to vaccine-related antigens were measured, and quantitative assessment of B cells and PCs in blood and bone marrow was performed at various time points before and after CTL019 therapy. While total serum immunoglobulin concentrations decline following CTL019-induced B-cell aplasia, several vaccine/pathogen-specific serum immunoglobulin G and A (IgG and IgA) titers remain relatively stable for at least 6 and 12 months posttreatment, respectively. Analysis of bone marrow biopsies after CTL019 revealed 8 patients with persistence of antibody-secreting PCs at least 25 months post-CTL019 infusion despite absence of CD19(+)CD20(+) B cells. These results provide strong evidence for the existence of memory B-cell-independent, long-lived PCs in humans that contribute to long-lasting humoral immunity.

Indexed as

Adoptive TransferAntigens, CD19Lymphoma, B-CellPlasma CellsT-LymphocytesAdolescentAdultBone Marrow CellsChildFemaleHumansImmunoglobulin AImmunoglobulin GMaleMiddle AgedAntigens, CD19CD19 molecule, humanImmunoglobulin AImmunoglobulin G

Identifiers

PMID27166358
PMCPMC4957161
OpenAlexW2360020331

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.