Examination of a new putative neuroblastoma inhibitor.

A newly report published in the journal Disease Models & Mechanisms from the Hallberg-Palmer research groups, working together with the Chesler lab at the Institute of Cancer Research, U.K. shows that a new ALK inhibitor, Lorlatinib (PF-06463922), shows remarkable pre-clinical efficacy in treatment of ALK-positive  neuroblasoma.  Lorlatinib was developed from the first ALK inhibitor, crizotinib (Xalkori), which was FDA approved for use in ALK-positive non-small-cell-lung-cancer 2011.


In neuroblastoma, activating mutations in the ALK kinase domain are typically refractory to crizotinib treatment, highlighting the need for more potent inhibitors. The next-generation ALK inhibitor Lorlatinib might be the answer; and in this work the research groups examined lorlatinib activity in ALK-driven neuroblastoma models in vitro and in vivo.


Lorlatinib has increased activity towards ALK mutants prevalent in neuroblastoma examined in both in vitro kinase assays and cell-based experiments examining ALK mutations.  In contrast to crizotinib, single agent administration of lorlatinib causes a dramatic tumor inhibition in mouse models of high-risk neuroblastoma. 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New paper in ONCOTARGET

New manuscript accepted for publication in ONCOTARGET from the Hallberg-Palmer groups, which have investigated a second generation ALK inhibitor, brigatinib, in a neuroblastoma setting, March 2016.

Crizotinib, the first clinically approved ALK inhibitor for the treatment of ALK-positive lung cancer has had less dramatic responses in neuroblastoma. Here we investigate the efficacy of a second-generation ALK inhibitor, brigatinib, in a neuroblastoma setting. Employing neuroblastoma cell lines, mouse xenograft and Drosophila melanogaster model systems expressing different constitutively active ALK variants, we show clear and efficient inhibition of ALK activity by brigatinib. Similar abrogation of ALK activity was observed in vitro employing a set of different constitutively active ALK variants in biochemical assays. These results suggest that brigatinib is an effective inhibitor of ALK kinase activity in ALK addicted neuroblastoma that should be considered as a potential future therapeutic option for ALK-positive neuroblastoma patients alone or in combination with other treatments.

At this point, in the lime light of NNBCR

Screen Shot 2016-01-13 at 2.44.17

Comparison of the Anaplastic Lymphoma Kinase (ALK) mutations found in neuroblastoma with the secondary crizotinib-resistant mutations reported in non-small-cell-lung-cancer (NSCLC) and inflammatory myofibroblastic tumours (IMT) highlights some interesting features. Resistant mutations (red) generally cluster the inhibitor and ATP binding site (ADP, cyan) and strongly activating neuroblastoma-associated ALK mutations (blue) occur nearby or around the putative residues that are important for initial activation of ALK (αC-helix; green, A-loop; teal) activity. Two exceptions are the F1174 and G1269 mutations (purple), which are mutations found in both neuroblastoma and resistant NSCLC patients. Regulatory spine (light pink) and Catalytic spine (lime green) are shown.

NNBCR kick-off meeting in Gothenburg

Agenda for the NNBCR kick-off meeting in Gothenburg

Monday 21/9


09.20-09.40                     Gathering and “Fika” at Arvid Carlsson salen, Medicinareg. 3


Session 1,                        Chairs: Tommy Martinsson and Bengt Hallberg

Talks are 15 min., + 5 min discussion


09.50-10.00,                    Tommy Martinsson welcomes us and summarizes NNBCR, goals and targets


10.00-10.10,                    Presentations of participants


10.10-10.30,             NGS in neuroblastoma – The Gothenburg experience.

Susanne Fransson (group TM)


10.30-10.50,                    Inhibition of Rho kinase represses neuroblastoma growth by inducing differentiation and MYCN degradation.

Malin Wickström (JIJ)


10.50-11.10,                    Analysis of somatic structural alterations and their influence on gene expression in diverse human cancers.

Babak Alaei-Mahabad (EL)


11.10-11.30,                    The PPM1D encoded WIP1 phosphatase is a novel oncogene and potential therapeutic target in neuroblastoma and medulloblastoma.

Jelena Milosevic (PK)


11.30-11.50,             6p22 lncRNAs and neuroblastoma.

Tanmoy Mondal, (CK)


11.50-12.10,             CNK, a downstream target of ALK.

Georg Wolfstetter (RP)



12.10-13.30                     Lunch at “Lyktan”




Session 2,                        Chairs: Erik Lekholm and Chandrasekhar Kanduri


13.30-13.50,             PF-06463922 is a superior drug in a NB setting.

Jikui Guan (BH)


13.50-14.10,             ALK gene mutation in Neuroblastoma.

Niloufar Javanmardi (TM)


14.10-14.30,                    COX/mPGES- 1/PGE2 pathway depicts an inflammatory dependent high-risk neuroblastoma subset available for novel specific anti-inflammatory treatment.

Anna Kock (PK)


14.30-14.50,             Negative selection during tumor evolution.

Jimmy van den Eynden (EL)



14.50-15.10                     Coffee   



Session 3,                        Chairs: Per Kogner and Ruth Palmer


15.10-15.30,                    Targeting suppressive myeloid cells in neuroblastoma augments checkpoint blockade therapy.

Nina Eissler (JIJ)


15.30-15.50,                    Characterization of potential tumor suppressor on chromosome 17.

Kankadeb Mishra (CK)


15.50-16.10,             AP-26113, a player on the neuroblastoma field.

Joachim Siaw (BH)


16.10-16.30,            A Fam-tastic activator of ALK.

Ruth Palmer (RP)


16.30-16.50,             Discussions and Conclusions



Check in HOTEL             Clarion Hotel Post, Drottningtorget 10



19.00-                                Dinner at restaurant “El Corazon”, Kungstorget


Tuesday 22/9


Departure at own time.



09.00-13.00                     NNBCR PI meeting,

at Stina Stenhagen conf. room, Medicinaregatan 3,


First discussion regarding 12th of November, 2015 and future planning. Tommy will lead this


10.00                                 Coffee



12-ish                                Lunch at Lyktan – the end.

Third NNBCR meeting

All consortium investigators gathered for the third NNBCR meeting in Gothenburg. The agenda included scientific updates and presentations, and plans were made for the website you are viewing right now.