Evidence map›Paper›PMID 21772052›Full record

ArticleBlood2011

An antiapoptotic BCL-2 family expression index predicts the response of chronic lymphocytic leukemia to ABT-737.

Sayer Al-Harbi, Brian T Hill, Suparna Mazumder, Kamini Singh, Jennifer Devecchio, Gaurav Choudhary, Lisa A Rybicki, Matt Kalaycio, Jaroslaw P Maciejewski, Janet A Houghton and 1 more

Open access · bronzeAbstract readEvaluation StudyValidation Study
In one paragraph

Article in Blood, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
5.0field-weighted citation impact, top 5% 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

58 citing papers in PubMed, 84 citations in OpenAlex.

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  5. Targeting BCL2 pathways in CLL: a story of resistance and ingenuity.Cancer drug resistance (Alhambra, Calif.) · 2023
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

11 authors at 4 institutions in 1 country.

Sayer Al-HarbiDepartment of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA.
Brian T Hill
Suparna Mazumder
Kamini Singh
Jennifer Devecchio
Gaurav Choudhary
Lisa A Rybicki
Matt Kalaycio
Jaroslaw P Maciejewski
Janet A Houghton
Alexandru Almasan
Cleveland Clinic Lerner College of Medicine · USCleveland Clinic · USCerner (United States) · USCleveland State University · US

Funding

CTSA INFRASTRUCTURE FOR PEDIATRIC RESEARCHUL1RR024989 · NCRR · CASE WESTERN RESERVE UNIVERSITY · PI DAVIS, PAMELA B · 2007 to 2011
$53.7M
Cdk-2 Independent role of cyclin E in Cell survivalR01CA127264 · NCI · CLEVELAND CLINIC LERNER COM-CWRU · PI ALMASAN, ALEXANDRU · 2009 to 2013
$1.6M
NCI NIH HHS CA127264NCI NIH HHS R01 CA127264NCRR NIH HHS UL1 RR024989NCRR NIH HHS UL1RR024989
6 · The paper itself

Abstract

The antiapoptotic BCL-2 proteins regulate lymphocyte survival and are over-expressed in lymphoid malignancies, including chronic lymphocytic leukemia. The small molecule inhibitor ABT-737 binds with high affinity to BCL-2, BCL-XL, and BCL-W but with low affinity to MCL-1, BFL-1, and BCL-B. The active analog of ABT-737, navitoclax, has shown a high therapeutic index in lymphoid malignancies; developing a predictive marker for it would be clinically valuable for patient selection or choice of drug combinations. Here we used RT-PCR as a highly sensitive and quantitative assay to compare expression of antiapoptotic BCL-2 genes that are known to be targeted by ABT-737. Our findings reveal that the relative ratio of MCL-1 and BFL-1 to BCL-2 expression provides a highly significant linear correlation with ABT-737 sensitivity (r = 0.6, P < .001). In contrast, antiapoptotic transcript levels, used individually or in combination for high or low affinity ABT-737-binding proteins, could not predict ABT-737 sensitivity. The (MCL-1 + BFL-1)/BCL-2 ratio was validated in a panel of leukemic cell lines subjected to genetic and pharmacologic manipulations. Changes after ABT-737 treatment included increased expression of BFL-1 and BCL-B that may contribute to treatment resistance. This study defines a highly significant BCL-2 expression index for predicting the response of CLL to ABT-737.

Indexed as

AgedAged, 80 and overAntineoplastic AgentsApoptosisBiomarkers, PharmacologicalBiomarkers, TumorBiphenyl CompoundsFemaleGene Expression Regulation, LeukemicHumansJurkat CellsLeukemia, Lymphocytic, Chronic, B-CellMaleMiddle AgedMultigene FamilyNitrophenolsABT-737Antineoplastic AgentsBiomarkers, PharmacologicalBiomarkers, TumorBiphenyl CompoundsNitrophenolsPiperazinesProto-Oncogene Proteins c-bcl-2Sulfonamides

Identifiers

PMID21772052
PMCPMC3186334
OpenAlexW2046279786

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.