Vallon Pharmaceuticals Presents Positive Data from Pilot Intranasal Human Abuse Study of Its Investigational Abuse Deterrent Stimulant, ADAIR, at the American Professional Society of ADHD and Related Disorders (APSARD) Annual Meeting
- According to reports from the US Department of Health and Human Services, more than 5 million Americans misuse or abuse prescription stimulants annually
- ADAIR is a novel, patented formulation of dextroamphetamine under development for the treatment of ADHD and narcolepsy that is designed to deter attempts to crush and snort it or take it by other non-oral routes that can produce a greater “high”
PHILADELPHIA--(BUSINESS WIRE)--Vallon Pharmaceuticals Inc., a specialty pharmaceutical company focused on the development of novel drugs for CNS disorders, today announced the presentation of positive data from a pilot study assessing human abuse liability for its investigational Abuse Deterrent Amphetamine Immediate Release (ADAIR). The data were presented this weekend at the 2020 American Professional Society of ADHD and Related Disorders (APSARD) Annual Meeting in Washington, D.C. ADAIR, the Company’s lead investigational new drug, is in development for the treatment of attention deficit hyperactivity disorder (ADHD) and narcolepsy.
The poster, titled, “A Pilot Human Abuse Potential Study in Recreational Stimulant Drug Users Assessing Safety, Pharmacokinetics and Abuse Liability of Intranasally Administered Manipulated ADAIR and Dextroamphetamine Sulfate Tablets,” reported data from an intranasal (snorting) clinical trial of ADAIR, Vallon’s novel formulation of immediate release dextroamphetamine. The results of this 16-subject trial (VAL-103) demonstrated that intranasal administration of manipulated ADAIR was generally well tolerated, with all adverse events considered mild or moderate, and no new safety or tolerability signals identified. In this crossover comparative study, as compared to crushed and snorted dextroamphetamine sulfate, ADAIR demonstrated a blunted pharmacokinetic profile (lower Cmax, delayed Tmax, and lower AUC, especially during the early hours after administration). In addition, as compared to dextroamphetamine sulfate, even after extensive manipulation, ADAIR, when snorted, was less desirable to recreational drug abusers on key measures of abuse liability, in particular the Emax drug-liking scale (primary pharmacodynamic endpoint).
“Results from this pilot study suggest that Vallon’s investigational immediate release stimulant, ADAIR, may demonstrate less abuse potential than standard dextroamphetamine when manipulated and misused intranasally,” said Dr. Timothy Whitaker, a board-certified psychiatrist and Vallon’s Chief Medical Officer. “We appreciate the opportunity to present these findings to the attendees at APSARD, many of whom are at the forefront of ADHD research and patient care.”
According to reports from the US Department of Health and Human Services, more than 5 million Americans misuse or abuse prescription stimulants annually, most commonly teenagers and young adults. Separate studies report that approximately 40% of people who misuse prescription stimulants do so by snorting them.
“While we plan to consult with the FDA and conduct additional clinical trials, the data presented at APSARD, combined with market research feedback from physicians who treat ADHD and parents of teenagers and young adults who are prescribed ADHD stimulants, suggest that ADAIR, if approved, could be an important addition to available treatments for ADHD,” said David Baker, President & Chief Executive Officer of Vallon.
The annual meeting of APSARD is an opportunity to bring experts together to share knowledge and build collaborative relationships for improving research and clinical practice. In a poster, “Neuropsychological Assessment Discriminates ADHD-I from SCT by Parent Report”, Beth Krone, PhD, Anne Claude Bedard, PhD, Kurt Schulz, PhD, Iliyan Ivanov, MD, Jeffrey Newcorn, MD, and research assistants Logan Downes, Quinn Downes, Amanda Kirschenbaum, presented an exciting (although relatively weak) double dissociation finding that suggests parent report measures of ADHD and SCT may map onto objective measures of qualitatively, and subtly, different clinical features of attention problems.
Prior research presented by this team at APSARD has examined the construct of Sluggish Cognitive Tempo (SCT). First, the team presented an examination of the SCT construct in a two-site clinical trial of N=235 youth, of whom greater than 60% had clinically significant SCT as measured by the Child Behavior Checklist (CBCL). The CBCL provides T scores according to gender and age norms for SCT behaviors. To test the validity of the CBCL reports, the investigators also collected reports of SCT behaviors from other scales used to characterize their cohort. While there was a trend toward greater across-scale reporting among parents of youth with ADHD-Inattentive presentation than ADHD-Combined type, the additive value of the additional symptom measures was small. Next, the team analyzed latent constructs that contributed to SCT reports among the cohort, and found two separate constructs that contributed to high SCT ratings: a depressive/anxious construct; and a somatic complaints construct.
In further research, the team examined the SCT’s influence on medication treatment response. The team’s findings were consistent with the body of literature stating that higher SCT scores correlate to greater functional impairment, and greater variability in treatment response, less improvement of ADHD with treatment. The treatment effect in this team’s study was attenuated by non-stimulants as compared to stimulants.
The new research being presented by this team examines the neuropsychological correlates of the SCT construct within ADHD by comparing N=107 youth with ADHD and N=30 healthy youth who completed both the Conner’s Continuous Performance Test (CPT-II) and the Attention Networks Test (ANT). The CPT-II is a norm-reference clinical task that assesses attention problems in ADHD, and the most common and consistent finding across ADHD cohorts has been a high variability of performance, yielding high scores for Hit-Rate Standard-Error, and Variability measures. The ANT is a well-validated research measure that has been used extensively to map attention networks among youth with and without ADHD. The ANT provides three network scores: one for attentional alerting; one for orienting attention; and one for executive control. This team hypothesized that SCT’s characteristic sluggishness might best be categorized as a deficit in altering.
Results: The double dissociation of ADHD and SCT was significant, but not particularly strong, with ANT Alerting accounting for about 8% of the variance in SCT reports. However, ANT Alerting (and no other ANT score) associated with ADHD scores. CPT-II measures of performance relating to fluctuations in attention accounted for between 7% and 10% of the variance in ADHD reports, but no CPT-II measure is associated with SCT reports.
Conclusions: This research shows that SCT and ADHD attention problems can each be assessed using different well-validated objective measures of attention. However, the SCT construct within ADHD is far from explained by these differences in neuropsychological testing. Given the strong two-latent class factor structure (factor 1 = depression/anxiety and factor 2 = somatic (physical) illness) associated with SCT in prior analyses, and given the conceptual similarities between SCT symptoms and those of the cytokine mediated sickness response, the team’s hopes to further examine inflammatory biomarkers within the ADHD population. Our hypothesis is that, for a larger portion of the ADHD population, SCT may be a clinical indicator of inflammatory processes either as a prodrome of depressive disorders, or associated with atopic illnesses so common among the ADHD population.
The annual meeting of APSARD is an opportunity to bring experts together to share knowledge and build collaborative relationships for improving research and clinical practice. This year, the leadership of APSARD joined together to provide an unprecedented mentoring opportunity for young clinical investigators in the first APSARD Mentorship Awards Day. Ten outstanding junior clinician-researchers were selected to attend a full day session hosted by APSARD’s past, present, and future presidents, all of whom are icons in the field of ADHD clinician research. This year’s Mentor Awardees were:
Atilla Ceranoglu, MD, of Massachusetts General Hospital, who presented his findings from a pilot study of a novel, non-medication intervention for ADHD, and presented his plans for integrating these treatments into a telemedicine framework.
Beth Krone, PhD, of the Icahn School of Medicine at Mount Sinai, in New York City, who presented her research on objective measures of sluggish cognitive tempo within ADHD, and presented a novel framework for studying biomarkers of SCT as a neuroinflammatory disorder comorbid with ADHD
Carrie Vaudreuil, MD, of Massachusetts General Hospital, who is active in research on pediatric psychopharmacology and functional outcomes
Cindy Ola, PhD, of the Seattle Children’s Hospital, who presented her research on Latinx parenting perspectives, and engaging Latinx families in behavioral parent training for ADHD.
Mariely Hernandez, Doctoral Candidate, of the City University of New York, who presented her research on substance misuse among college-aged youth with ADHD.
Mei Uchida, MD, of Massachusetts General Hospital, who is active in research on pediatric psychopharmacology and functional outcomes, and presented her ideas for using fMRI to map developmental trajectories for preschoolers at risk for ADHD.
Michael Meinzer, PhD, of the University of Illinois at Chicago who discussed his research on functional outcomes among adolescents and college aged youth who are making transitions to independence.
Robert Jaffe, MD, of the Icahn School of Medicine at Mount Sinai in New York City, whose clinical work in Tics, Tourette’s and OCD has led to his research on comorbidities within ADHD, and a focus on access to services within the hospital healthcare system.
Victoria Lishak, PhD of the Hospital for Sick Children in Toronto, Canada, who presented her novel computer mediated interventions for cognitive remediation of executive functioning disorders in ADHD, and introduced her next steps in developing virtual reality systems for cognitive training.
William Pelham, PhD , of the Seattle Children’s Hospital, who presented outcomes research examining predictors for growth suppression in response to pharmacological treatment with stimulant drugs.
Conference Posters: Don’t miss the poster sessions at the 2020 Annual Meeting of APSARD. Hear new voices and see new research!
Bullying, Aggression and ADHD
Jessica Simmons, M.A.
Kevin Antshel, Ph.D.
Department of Psychology
ADHD Lifespan Treatment, Education and Research (ALTER) program
Bullying is a repetitive aggressive behavior that occurs in an unequal power dynamic between a bully and victim. Bullying is associated with significant negative mental health outcomes for both victims and perpetrators. Youth who both bully others and are bullied by others (“bully-victims”) have the worst outcomes. Not surprisingly, within the past decade, youth bullying was labeled a public health problem by the Centers for Disease Control (CDC). ADHD represents a diathesis for bullying involvement, both as a perpetrator and a victim. In fact, multiple studies have suggested that youth with ADHD are up to 50% more likely to be involved in bullying, both perpetration and victimization, than their typically developing peers.
The links to victimization are clear in ADHD; bullying victims (not specific to ADHD) exhibit poor social behaviors, including hyperactivity and impulsivity, which irritate or annoy others and/or cause them stand out from their same-age peers. Violating social expectations (i.e., acting or saying things that are immature), missing social cues, and disregarding personal space are other reasons why children may be victimized by their peers.
The links to bully perpetration and being a “bully-victim”, however, require additional consideration. Certainly, youth with ADHD can act aggressively toward their peers. For example, youth with ADHD may respond aggressively if bullied. Indeed, aggression is one of the primary reasons that youth with ADHD are socially rejected. Nonetheless, not all aggression is bullying.
Aggression in ADHD appears to be linked to frustration, unsatisfied anticipation of reward, and difficulties controlling impulses. Aggression in ADHD seems to be more reactive and be an impulsive emotional response to environmental stimuli. Proactive aggression is an intentional response viewed as an acceptable way to achieve a goal. Proactive aggression is less common in ADHD and most likely to occur in those with comorbid oppositional defiant disorder (ODD) and/or conduct disorder (CD).
Distinguishing whether aggression is reactive and/or proactive is clinically important to better understand trajectories of behavior and plan interventions. Understanding whether aggression is reactive and/or proactive is also important for understanding the extant bullying literature. Insufficient operationalization of “bullying” has been an ongoing problem in the literature, leading researchers to question whether youth and adults have a similar idea of the behaviors that meet the standards of “bullying”.
A study by Murray and colleagues1 examined this important distinction and longitudinally considered whether proactive or reactive aggression has a stronger association with symptoms of ADHD. Data on ADHD symptoms and reactive and proactive aggressive behaviors were annually collected from teachers of 1,571 students in Zurich, Switzerland over eight years, beginning when the children were 7 years old and ending at age 15. Growth curve models were used to assess how symptoms of ADHD were related to reactive and proactive aggressive behaviors over the eight data collection points. Results indicated that the average growth curves for reactive and proactive aggression declined from ages 7 to 15 years of age. However, ADHD symptoms showed stronger and more significant developmental relations with reactive aggression than proactive aggression. Notably, the declines in reactive aggression were strongly and significantly correlated with declines in hyperactivity / impulsivity more so than inattention symptoms.
The results of the Murray et al. study are important for understanding bullying behaviors in ADHD. Despite being aggressive, reactive aggression often does not meet the standards of bullying. Murray and colleagues’ data should encourage us as a field to clearly operationalize bullying in our research and to question the data suggesting youth with ADHD (without comorbid ODD/CD) are more likely to be bully perpetrators than their peers. This distinction is more than semantic; important clinical, research and public policy implications depend upon correctly identifying the aggressive behavior.
If you too share my passion and interest for understanding bullying in ADHD, please visit my poster at the upcoming APSARD conference. I would love to continue this dialogue!
1 Murray, A. L., Obsuth, I., Zirk-Sadowski, J., Ribeaud, D., & Eisner, M. (2016). Developmental relations between ADHD symptoms and reactive versus proactive aggression across childhood and adolescence. Journal of Attention Disorders, 1-10. doi: 10.1177/1087054716666323.
Role of Neuropsychological Assessment in ADHD
Kevin Antshel, Ph.D.
Professor of Psychology
Director of Clinical Psychology doctoral program
ADHD Lifespan Treatment, Education and Research (ALTER) program
The role of neuropsychology in the assessment of ADHD is a controversial topic and one that generates considerable discourse on both sides of the argument. On the one hand, psychological assessment is often required by standardized testing agencies and universities for ADHD test accommodation determinations under the Americans with Disabilities Act (ADA). On the other hand, some in the field, most notably Russell Barkley, believe that such testing is not useful for diagnosing ADHD.
While supporting the use of IQ and academic achievement measures, Barkley is opposed to the use of performance based tests of executive functioning (EF) in diagnostic evaluations and suggests that the incremental validity of such tests (e.g., continuous performance tests) is quite low, largely due to high false negative classification rates, inability to differentiate diagnoses among disorders and the ease with which such tests can be feigned. In its’ place, Barkley asserts that EF rating scales are more useful, ecologically valid and cost-effective and should be used instead of EF tests. ADHD diagnostic practice parameters from several associations seem to agree with Barkley and either consider neuropsychological tests optional (American Academy of Child and Adolescent Psychiatry) or make no comment on their use (American Academy of Pediatrics).
Others1 believe that EF tests can make contributions to a comprehensive ADHD assessment. For example, neuropsychological tests could provide information about potential treatment targets (e.g., working memory predicts to reading and math attainment) and treatment approaches (e.g., poor EF response inhibition task performance predicts to better methylphenidate response). Factor scores or poor performance on a certain number of EF tasks seems to be a better predictor than single EF tasks. Others believe that performance-based tests and EF rating scales are both important to include as they provide different types of complementary information (EF tests: efficiency of cognitive abilities; EF rating scales: success in goal pursuit) and are weakly correlated (r=.19)2. Anecdotally, I have heard clinicians report that neuropsychological testing can be helpful to specify the ADHD phenotype, decipher some differential diagnoses, guide families and provide valuable information for interventions.
These diverging opinions leave the practicing clinician in a quandary. Given the clear public health, policy and educational implications of this conversation, my colleagues Russell Barkley, Mark Mahone and Russell Schachar and I will be discussing this issue at the APSARD conference. Please join us for continued conversation on this topic at our Lunch Session and Discussion Group on Sunday, January 19th from 12:30 – 2:30 PM. We hope to provide a thoughtful, balanced discussion of this important topic and welcome the input of others who have an interest in the role of neuropsychology in the assessment of ADHD!
1 Molitor, S.J., & Langberg, J.M. (2017). Using task performance to inform treatment planning for
youth with ADHD: A systematic review. Clinical Psychology Review, 58, 157-173.
2 Toplak, M. E., West, R. F., & Stanovich, K. E. (2013). Practitioner review: Do performance-
based measures and ratings of executive function assess the same construct? Journal of Child Psychology and Psychiatry, 54, 113–224.
The annual meeting of APSARD is an opportunity to bring experts together to share knowledge and build collaborative relationships for improving research and clinical practice. In the symposium, “The Changing Legal Climate of Marijuana use in its Impact for our Patients With ADHD”, Dr. Weerts, Dr. Hill, Dr. Riggs, and Dr. Wang will discuss new developments and key concepts in the changing landscape of marijuana use and misuse among people with ADHD.
Clinicians will deepen awareness of approaches to assessing and treating adolescents and adults with psychiatric disorders in context of cannabis use and cannabis use disorders. They will develop their understanding of the changing legal landscape of marijuana in the United States and the impact this might have for public health
Researchers will review the pharmacologic properties of marijuana and its key constituents.
As more states legalize marijuana for both medical and recreational use, there is an increased need for clinicians to understand the current legislative changes surrounding marijuana, the pharmacology of marijuana, and how the legislative changes and variations in marijuana’s constituents and potency may impact their patients’ psychiatric and medical conditions.
Dr. Weerts will discuss the pharmacology of cannabis and key constituents, Δ9-tetrahydrocannabinol (THC) and cannabidiol, with updates on the regulatory status of these compounds at the federal and state levels.
Dr. Hill will describe medical and psychiatric use of cannabis and cannabis compounds, and the state of the evidence base for medical use.
Dr. Wang will present an international perspective and, using highlights from the Canadian Cannabis Policy, discuss lessons that may be applicable to American providers, practitioners, and policy makers.
Dr. Riggs will present data regarding the use rates among adolescents and college-aged young adults in conjunction with the rapid expansion of marijuana legalization. In context of data describing increased risk for psychosis and other negative impacts among youth using these products, Dr. Riggs will address approaches to treatment of these individuals with ADHD.