1
|
Sanai N, Tien A, Jiang J, Chang Y, Pennington-Krygier C, DeSantis A, Fujita Y, Kim S, Li J, Mehta S. OS05.8.A A Phase 0/1 ‘Trigger’ Trial of Ribociclib Plus Everolimus in Recurrent High-Grade Glioma. Neuro Oncol 2021. [DOI: 10.1093/neuonc/noab180.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
BACKGROUND
The RB-CDK4/6 and mTOR signaling pathways are deregulated in high-grade glioma (HGG) and mTOR activation is a potential mechanism of resistance to CDK4/6 inhibition. This study evaluates the tumor pharmacokinetics (PK) and tumor pharmacodynamics (PD) of combined CDK4/6 and mTOR inhibition in recurrent HGG patients.
MATERIAL AND METHODS
Eligible patients had recurrent HGG with (1) intact RB expression, (2) CDKN2A/B deletion or CDK4/6 amplification, and (3) PTEN loss or PIK3CA mutations. Six patients received five days of presurgical ribociclib (400mg QD) plus everolimus (2.5mg QD) and then underwent tumor resection at 2, 8 or 24 hours following the last dose. Five subsequent dose-escalation cohorts each enrolled three additional patients, reaching a maximum dose-level of ribociclib (600mg QD) plus everolimus (60mg QW). Tumor tissue (gadolinium [Gd]-enhancing and nonenhancing regions), CSF, and plasma were collected. Total and unbound drug concentrations were determined using validated LC-MS/MS methods. Tumor PD effects, including RB and S6 phosphorylation, were compared to matched archival tissue. A PK ‘trigger’ (i.e., unbound concentration > 5-fold biochemical IC50) and a PD ‘trigger’ (>30% decrease in both pRB and pS6) were set for each drug. Gd-nonenhancing tissue exhibiting both PK and PD effects in excess of these thresholds qualified patients for postoperative combination therapy.
RESULTS
21 patients with WHO Grade III (n=2) and WHO Grade IV (n=19) gliomas were enrolled. No dose-limiting toxicities were observed. Following presurgical drug, all patients demonstrated marked decrease in Gd-enhancement on preoperative MRI. In Gd-nonenhancing tumor regions, the median unbound concentration of ribociclib was 719 nM (i.e., > 5-fold biochemical IC50 for CDK4/6 inhibition), whereas the unbound everolimus tumor concentrations in all patients were below the lower limit of quantitation (i.e., < 0.2 nM). The median total concentrations of everolimus in tumors at dose-levels 0 to 5 were 2.9, 8.8, 10.3, 5.0, 15.7, and 13.7 nM, respectively. Across all dose-levels, 62% (13/21) and 22% (5/21) of tumors demonstrated decreased tumor RB and S6 phosphorylation, respectively. Tumor proliferation (MIB-1) was decreased in 67% (14/21) of all patients.
CONCLUSION
In adult HGG, ribociclib achieves pharmacologically-relevant concentrations in Gd-nonenhancing tumor, consistent with the observed tumor PD effects. Everolimus exhibits very limited penetration into human glioma tissue. Our study supports further development of ribociclib, but not everolimus, for the treatment of glioma patients.
Collapse
Affiliation(s)
- N Sanai
- Barrow Neurological Institute, Phoenix, AZ, United States
| | - A Tien
- Barrow Neurological Institute, Phoenix, AZ, United States
| | - J Jiang
- Karmanos Cancer Institute, Detroit, MI, United States
| | - Y Chang
- Barrow Neurological Institute, Phoenix, AZ, United States
| | | | - A DeSantis
- Barrow Neurological Institute, Phoenix, AZ, United States
| | - Y Fujita
- Barrow Neurological Institute, Phoenix, AZ, United States
| | - S Kim
- Karmanos Cancer Institute, Detroit, MI, United States
| | - J Li
- Karmanos Cancer Institute, Detroit, MI, United States
| | - S Mehta
- Barrow Neurological Institute, Phoenix, AZ, United States
| |
Collapse
|
2
|
Mehta S, Sanai N, Chang YW, Margaryan T, DeSantis A, Elliott M, Pennington-Krygier C, Hook G, Yoo W, Tien AC, Tovmasyan A. 341O A phase 0 ‘Trigger’ trial of CDK4/6 plus ERK1/2 inhibitors in recurrent glioblastoma. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
|
3
|
Troxel WM, Richardson A, DeSantis A, Ghosh-Dastidar B, Beckman R, Buman M, Hale L, Buysse D, Dubowitz T. 0147 Neighborhood Safety and Crime are Linked with Poorer Sleep Efficiency in Urban, African American Residents. Sleep 2018. [DOI: 10.1093/sleep/zsy061.146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | | | | | | | - M Buman
- Arizona State University, Phoenix, AZ
| | - L Hale
- Stony Brook University, Stony Brook, NY
| | - D Buysse
- University of Pittsburgh, Pittsburgh, PA
| | | |
Collapse
|
4
|
Troxel WM, DeSantis A, Ghosh-Dastidar B, Hunter G, Buysse D, Buman M, Hale L, Dubowitz T. 1055 A Preliminary Validation Study of a Composite Sleep Health Index: Associations with Psychological Distress, Obesity, and Physical Functioning. Sleep 2018. [DOI: 10.1093/sleep/zsy061.1054] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
| | | | | | - G Hunter
- RAND Corporation, Pittsburgh, PA
| | - D Buysse
- University of Pittsburgh, Pittsburgh, PA
| | - M Buman
- Arizona State University, Phoenix, AZ
| | - L Hale
- Stony Brook University, Stony Brook, NY
| | | |
Collapse
|
5
|
Ferguson F, Schlissel E, Kucine A, Alexander S, DeSantis A, Hendricks R, Xu L. Long-term management of a child with regional odontodysplasia: a case report. Pediatr Dent 2009; 31:346-349. [PMID: 19722446] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Regional odontodysplasia, or "ghost teeth," is a dental abnormality derived from both epithelial and mesenchymal components of the tooth bud. Teeth within a particular quadrant are affected. Affected teeth usually have thin enamel and dentin of poor quality with shortened roots, open apices, or enlarged pulp chambers. The permanent teeth and maxillary arch are observed to be more severely affected than primary teeth and the mandibular arch (ratio=1.6:1), respectively. Eruption of the affected teeth is delayed or may not happen. The cause of the phenomenon is unknown. Since this problem affects both dentitions and can involve multiple care disciplines, patients often require oral care over a long period of time. The purpose of this report was to present the management of a case from initial presentation at the age of 20 months to a final prosthesis completion at the age of 22 years. The long-term treatment may involve a pediatric dentist, orthodontist, oral surgeon, and prosthodontist.
Collapse
Affiliation(s)
- Fred Ferguson
- Department of Orthodontics and Pediatric Dentistry, School of Dental Medicine, Stony Brook University, New York, NY, USA.
| | | | | | | | | | | | | |
Collapse
|
6
|
Corrie JE, DeSantis A, Katayama Y, Khodakhah K, Messenger JB, Ogden DC, Trentham DR. Postsynaptic activation at the squid giant synapse by photolytic release of L-glutamate from a 'caged' L-glutamate. J Physiol 1993; 465:1-8. [PMID: 7901400 PMCID: PMC1175415 DOI: 10.1113/jphysiol.1993.sp019662] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023] Open
Abstract
1. Pharmacological evidence suggests L-glutamate is a strong candidate as a transmitter at the giant synapse of the squid. Postsynaptic activation at the giant synapse cannot be effected by conventional application of putative neurotransmitters by iontophoresis or perfusion, apparently because the complex structure of the synapse prevents a sufficiently rapid change in concentration at the postsynaptic membrane. Flash photolytic release of L-glutamate from a pharmacologically inert 'caged' L-glutamate pre-equilibrated in the stellate ganglion of Alloteuthis or Loligo was used to determine whether L-glutamate can produce postsynaptic activation when released rapidly in the synaptic clefts. 2. The preparation, reaction mechanism and properties of the caged L-glutamate, N-1-(2-nitrophenyl)ethoxycarbonyl-L-glutamate, are described. The product quantum yield on photolysis was 0.65 (+/- 0.05). On flash photolysis glutamate release followed a single exponential time-course in the pH range 5.5-7.8. The rate constant was proportional to [H+] and was 93 s-1 at pH 5.5 and 16 degrees C in artificial sea water (ionic strength, I = 0.68 M). 3. At pH 7.8 flash photolysis of caged glutamate pre-equilibrated in the synapse caused only a slow depolarization. A second photolytic release of L-glutamate or transsynaptic activation produced no further depolarization, suggesting desensitization and inactivation of postsynaptic mechanisms by the initial pulse of L-glutamate. 4. Synaptic transmission in the giant synapse was normal at pH 5.5. Flash photolysis at pH 5.5 caused rapid production of L-glutamate within the synaptic cleft and a fast postsynaptic depolarization which generated postsynaptic action potentials.(ABSTRACT TRUNCATED AT 250 WORDS)
Collapse
Affiliation(s)
- J E Corrie
- National Institute for Medical Research, Mill Hill, London
| | | | | | | | | | | | | |
Collapse
|
7
|
Sironi VA, Ravagnati L, Cabrini GP, DeSantis A, Marossero F. Antiepileptic drug monitoring in selecting epileptic patients for surgery. Acta Neurol (Napoli) 1981; 3:735-42. [PMID: 6801930] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
|
8
|
DeSantis A, Stipani I, Genchi G. [Kinetics of dicarboxylic-acid transport in the mitochondria of Helianthus tuberosus]. Boll Soc Ital Biol Sper 1977; 53:1411-7. [PMID: 607952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|