PSYCHOPHARMACOLOGIC APPROACHES TO DEPRESSION IN CHILDREN AND - - PowerPoint PPT Presentation

psychopharmacologic approaches to depression in children
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PSYCHOPHARMACOLOGIC APPROACHES TO DEPRESSION IN CHILDREN AND - - PowerPoint PPT Presentation

PSYCHOPHARMACOLOGIC APPROACHES TO DEPRESSION IN CHILDREN AND ADOLESCENTS Learning Objectives Describe the evidence for selective serotonin reuptake inhibitors (SSRIs) in youth with depressive disorders List predictors of treatment


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PSYCHOPHARMACOLOGIC APPROACHES TO DEPRESSION IN CHILDREN AND ADOLESCENTS

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SLIDE 2

Learning Objectives

  • Describe the evidence for selective serotonin reuptake

inhibitors (SSRIs) in youth with depressive disorders

  • List predictors of treatment response in adolescents with

SSRI-resistant major depressive disorder

  • List specific patient characteristics that may guide treatment

selection in adolescents with major depressive disorder

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SLIDE 3

Off-Label Medication Use

  • Dr. Strawn does intend to discuss the use of off-label/unapproved use of drugs.
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SLIDE 4

Adolescence Preschool School-Age Age 7 Age 4 Puberty Irritability3 Moodiness3 Loss of interest3 Depressed mood, lack of concentration, insomnia, suicidal ideation Somatic complaints Increase in suicide attempts and suicide completion Hypersomnia (increases with age)2

Ryan et al. The Clinical Picture of Major Depression in Children & Adolescents. Arch Gen Psychiatry 1987;44:854-61; Luby et

  • al. Modification of DSM-IV Criteria for Depression in Depressed Preschool Children. Am J Psychiatry 2003;160:1169-72;

Lewinsohn et al. Major depression in community adolescents: age at onset, episode duration, and time to recurrence. J Am Acad Child Adolesc Psychiatry 1994;33:809-18.

Weight loss (increases with age)1

Clinical Aspects of Depression Vary

Delusions

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SLIDE 5

EDSP: Incidence and Onset of Depression

Beesdo et al. Incidence and risk patterns of anxiety and depressive disorders and categorization of generalized anxiety disorder. Arch Gen Psychiatry 2010;67:47-57.

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SLIDE 6

Treatment of Depression in Youth

  • Multimodal treatment—psychotherapy and pharmacotherapy
  • Psychotherapies
  • cognitive behavioral,
  • supportive,
  • group,
  • family therapy,
  • social skills training, and
  • psychodynamic

Strawn and Walkup. The quest to identify the best treatment for pediatric depression. Lancet Psychiatry 2020 (in press); Birmahar et al. Practice Parameter for the Assessment and Treatment of Children and Adolescents with Depressive Disorders. J Am Acad. Child Adolesc Psychiatry 2007;46:1503-26.

  • Pharmacotherapies
  • SSRIs are 1st line

psychopharmacologic treatment for children with depression

  • SNRIs are also being used by

many clinicians, but data are limited

  • No positive trials for MAOIs
  • No positive trials for TCAs
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SLIDE 7

Treatment of Adolescent Depression Study

Treatment Week Adjusted Mean Children’s Depression Rating Scale Score 45 60 30 6 12 Placebo CBT Alone Fluoxetine alone Fluoxetine + CBT

March et al. JAMA 2004;292:807-20; Emslie et al. J Am Acad Child Adolesc Psychiatry 2006;45:1440–55.

  • Fluoxetine + CBT > placebo, p=.001
  • Fluoxetine + CBT > fluoxetine, p=.02
  • Fluoxetine > CBT alone, p=.01
  • Response rates:
  • fluoxetine + CBT, 71%;
  • fluoxetine alone, 61%;
  • CBT alone, 43%;
  • placebo, 35%
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SLIDE 8

Symptomatic Improvement in MDD

Tao et al. J Child and Adolesc Psychopharmacology 2010.

Fluoxetine Treatment Week Mean Scale Score 1 2 6 8 10 12 0 1 2 Morbid Thoughts Anhedonia Observed Depression Reported Depression 3 4 3 4

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SLIDE 9

Time Course of Response and Side Effects

Duration of antidepressant treatment

Weight gain (if applicable) Monoamine levels

activation

Symptoms Receptor sensitivity

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SLIDE 10

SSRI Response: How long to wait?

Varigonda et al. JAACAP 2015;54(7):557-64; Strawn et al. JAACAP 2018;57(4):235-44.

Improvement in Depressive Symptoms

2 4 6 8 10

  • 0.1
  • 0.2
  • 0.3
  • 0.4
  • 0.5

Week

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SLIDE 11

Titration Strategies Based on RCTs

Initial 5 mg 25 mg 5 mg Week 1 10 mg 50 mg 20 mg Week 2 10 mg 50 mg 20 mg Week 3 10 mg 100 mg 20 mg Week 4 10 mg 100 mg 20 mg Optional increases Week 5 15 mg 100 mg 40 mg Week 6 15 mg 150 mg 40 mg Week 7 20 mg 150 mg 40 mg Week 8 20 mg 150 mg 40 mg Week 9 20 mg 150 mg 40 mg Week 10 20 mg 150 mg 40 mg fluoxetine escitalopram sertraline Age 7–11

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SLIDE 12

Titration Strategies Based on RCTs

Initial 5 mg 25 mg 10 mg Week 1 5 mg 50 mg 10 mg Week 2 10 mg 50 mg 20 mg Week 3 10 mg 50 mg 20 mg Week 4 15 mg 75 mg 20 mg Optional increases Week 5 15 mg 100 mg 20 mg Week 6 20 mg 100 mg 20 mg Week 7 20 mg 150 mg 40 mg Week 8 20 mg 150 mg 40 mg Week 9 20 mg 200 mg 60 mg Week 10 20 mg 200 mg 60 mg fluoxetine escitalopram sertraline Age 12–17

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Rationale for Focus on Adolescents With Treatment-Resistant Depression (TRD)

  • Remission rate around 30%
  • TRD associated with increased

morbidity and development of chronic depression

  • Identify the next, best steps for SSRI-

resistant depression in adolescents

Brent et al. Treatment of Resistant Depression In Adolescents. JAMA 2008;299(8):901-13. Strawn and Walkup. The quest to identify the best treatment for pediatric

  • depression. Lancet Psychiatry 2020 (in press).

Strawn et al. Treatment Resistant Depression in Adolescents: Clinical Features and Measurement of Treatment Resistance. J Child Adolesc.Psychopharm 2020 (in press).

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SLIDE 14

Defining “Adequate” SSRI Treatment

  • > 8 weeks
  • Last 4+ weeks at equivalent of 40 mg of

fluoxetine

  • May use 20 mg equivalent if unable to

tolerate higher dose

Fluoxetine 20 mg Fluoxetine 40 mg

Brent D et al. JAMA 2008;299(8):901-13.

Fluoxetine 40 mg

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SLIDE 15

SSRI Non-responders (>2 mos of tx) Week Week 12 Wk

  • 3

Brent D et al. JAMA 2008;299(8):901-13.

N=334 Age: 12–18 years Dx: MDD + no response to 2-month initial SSRI Primary Outcome: CGI-I <2 + >50% decrease in CDRS-R and dCDRS-R. SNRI + CBT Venlafaxine XR SNRI Venlafaxine XR SSRI + CBT Citalopram + CBT Paroxetine + CBT Fluoxetine + CBT SSRI Citalopram Paroxetine Fluoxetine

TORDIA Design

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SLIDE 16

What did they find?

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Treatment Week 4 6 2 6 12 SSRI Venlafaxine 3 5 CDRS Score Treatment Week 2 4 6 12 1 3 Antidepressant without CBT Antidepressant + CBT Clinical Global Impression Scale—Severity 5

Brent D et al. JAMA 2008;299(8):901-13.

TORDIA: Primary Findings

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SLIDE 18

TORDIA: Primary Findings

Improvement in Depressive Symptoms

Mills, Croarkin Strawn. Under review 2020.

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SLIDE 19

TORDIA: Primary Findings

Improvement in Depressive Symptoms

Mills, Croarkin Strawn. Under review 2020.

p=0.01

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SLIDE 20

Anhedonia and Treatment Response

  • Only symptom that predicts lack of

remission when controlling for others

  • Strongest predictor of fewer depression free

days

  • Treatment did not target positive affect (only

1.5 sessions of behavioral activation)

  • May need to more specifically target behavioral

activation

anhedonia

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SLIDE 21

Drug and Alcohol Use in TORDIA

Goldstein BI et al. J Am Acad Child Adolesc Psychiatry 2009;48(12):1182-92. No response Response Substance Use Severity Time (weeks)

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SLIDE 22

Plasma Concentration and Response

Sakolsky DJ et al. J Clin Psychopharmacol 2011;31(1):92-7.

10 20 30 40 50 60 70 80 VEN FLX/CIT FLX CIT PAR ≥ GM <GM

P= .04

P=.07 P=.005

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SLIDE 23

Adolescent SSRI Exposure

Ramsey et al. Gene-Based Dose Optimization in Children. Annu Rev Pharmacol Toxicol 2020;60:4.1–4.21. 16-year-old female 14-year-old female

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SLIDE 24

Cytochrome P450 Enzymes and Pharmacokinetics in Adolescents

Ramsey et al. Annu Rev Pharmacol Toxicol 2020;60:4.1–4.21.

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Pediatric Escitalopram and CYP2C19

Strawn, Poweleit, Ramsey. CYP2C19-guided escitalopram and sertraline dosing in pediatric patients: a pharmacokinetic modeling study. J Child Adol Psychop 2019;29(5):340-7.

Intermediate metabolizer Poor metabolizer Normal metabolizer Rapid metabolizer Ultrarapid metabolizer

Phenotype Equivalent dose Poor metabolizer 10 mg Intermediate metabolizer 15 mg Normal metabolizer 20 mg Rapid metabolizer 25 mg Ultrarapid metabolizer 30 mg

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Pediatric Sertraline and CYP2C19

Strawn JR et al. J Child Adol Psychop 2019;29(5):340-7.

Intermediate metabolizer Poor metabolizer Normal metabolizer Rapid metabolizer Ultrarapid metabolizer

Phenotype Equivalent dose Poor metabolizer 50 mg Intermediate metabolizer 125 mg Normal metabolizer 150 mg Rapid metabolizer 175 mg Ultrarapid metabolizer 225 mg

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SLIDE 27

TORDIA: Self-Harm in High Ideators

0.0% 2.0% 4.0% 6.0% 8.0% 10.0% 12.0% SSRI VLX Low High

p=0.75 p=0.02

Adapted from G. Emslie. Annual Meeting of the American Academy of Child & Adolescent Psychiatry 2012.

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SLIDE 28

TORDIA: Treatment and Suicidal Events

Brent DA et al. Am J Psychiatry 2009;166:418–26.

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SLIDE 29

TORDIA: Early Response

20 25 30 35 40 45 50 55 60 65

6 12 24 CDRS-R Week Non-Remitters

Emslie GJ et al. Am J Psychiatry. 2010;167(7):782-91.

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SLIDE 30

TORDIA: Early Response

20 25 30 35 40 45 50 55 60 65

6 12 24 CDRS-R Week Non-Remitters Remitters

Emslie GJ et al. Am J Psychiatry 2010;167(7):782-91.

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SLIDE 31

TORDIA: Insomnia

  • Trazodone-treated patients, 6x < likely

to respond than patients who did not receive any soporific (p=0.001)

  • Trazodone-treated patients 3x more

likely to self-harm (OR=3, p=0.03)

  • No patient receiving trazodone +

paroxetine or fluoxetine responded (0/13)

  • Patients treated with other soporifics

responded similarly to those who received no sleep medication (60% vs. 50%)

Shamseddeen W et al. J Child Adolesc Psychopharmacol 2012;22(1):29-36.

Trazodone mCPP

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SLIDE 32

TORDIA: Insomnia

  • Trazodone-treated patients, 6x < likely

to respond than patients who did not receive any soporific (p=0.001)

  • Trazodone-treated patients 3x more

likely to self-harm (OR=3, p=0.03)

  • No patient receiving trazodone +

paroxetine or fluoxetine responded (0/13)

  • Patients treated with other soporifics

responded similarly to those who received no sleep medication (60% vs. 50%).

Paroxetine Fluoxetine 2D6 Trazodone mCPP mCPP

Shamseddeen W et al. J Child Adolesc Psychopharmacol 2012;22(1):29-36.

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TORDIA Take Homes

  • Medication + Therapy > Medication (NNT=7)
  • Venlafaxine
  • more side effects
  • less efficacy than another SSRI as 2nd line
  • Medication dose/exposure is IMPORTANT
  • COMBO >> MED with comorbidity
  • Poorer response:
  • substance use,
  • family conflict,
  • sleep difficulties
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When to Adjust Treatment in Adolescent MDD

Gunlicks-stoessel M et al. J Am Acad Child Adolesc Psychiatry 2019;58(1):80-91.

IPT-A Early decision

>20% reduction <20% reduction

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SLIDE 35

IPT-A Early decision

>20% reduction

Continue IPT-A  IPT-A Frequency

<20% reduction Fluoxetine

When to Adjust Treatment in Adolescent MDD

Gunlicks-stoessel M et al. J Am Acad Child Adolesc Psychiatry. 2019;58(1):80-91.

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SLIDE 36

IPT-A Early decision

>20% reduction

Continue IPT-A  IPT-A Frequency

<20% reduction Fluoxetine

When to Adjust Treatment in Adolescent MDD

IPT-A Late decision

>40% reduction <40% reduction

Gunlicks-stoessel M et al. J Am Acad Child Adolesc Psychiatry. 2019;58(1):80-91.

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SLIDE 37

IPT-A Early decision

>20% reduction

Continue IPT-A  IPT-A Frequency

<20% reduction Fluoxetine

When to Adjust Treatment in Adolescent MDD

IPT-A Late decision

>40% reduction

Continue IPT-A  IPT-A Frequency

<40% reduction Fluoxetine

Gunlicks-stoessel M et al. J Am Acad Child Adolesc Psychiatry. 2019;58(1):80-91.

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TMS in Adolescents With Treatment- Resistant Depression

Croarkin et al. In preparation.

  • Multi-site, N=103
  • Age 12-21, ATR >1
  • No concurrent medication

Left dorsolateral prefrontal cortex stimulation, 5 days/week

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SLIDE 39
  • It has been the first medication

trial

  • It has been poorly tolerated
  • There is <25% improvement
  • There is more time to wait (i.e.,

less functional impairment)

  • There may be drug interaction
  • There may be adherence

concerns

  • The initial antidepressant was well

tolerated

  • There is a partial response to the

initial agent (>25% improvement)

  • There is less time to wait for a

response (e.g., more functional impairment)

Switching vs. Augmentation

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Switching Medications

  • Direct switch: stop first antidepressant

and start new antidepressant

Keks N et al. Aust Prescr 2016;39(3):76-83;

  • Stahl. Stahl’s Essential Psychopharmacology: The Prescriber’s Guide. 4th Edition.
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Switching Medications

  • Direct switch: stop first antidepressant

and start new antidepressant

  • Taper and switch immediately:

gradually taper the first antidepressant and start the new antidepressant immediately after discontinuation

Keks N et al. Aust Prescr 2016;39(3):76-83;

  • Stahl. Stahl’s Essential Psychopharmacology: The Prescriber’s Guide. 4th Edition.
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SLIDE 42

Switching Medications

  • Direct switch: stop first antidepressant

and start new antidepressant

  • Taper and switch immediately:

gradually taper the first antidepressant and start the new antidepressant immediately after discontinuation

  • Taper and switch after a washout:

gradually withdraw the first antidepressant then start the new antidepressant after a wash out period

Keks N et al. Aust Prescr 2016;39(3):76-83;

  • Stahl. Stahl’s Essential Psychopharmacology: The Prescriber’s Guide. 4th Edition.
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SLIDE 43

Switching Medications

Keks N et al. Aust Prescr 2016;39(3):76-83;

  • Stahl. Stahl’s Essential Psychopharmacology: The Prescriber’s Guide. 4th Edition.
  • Direct switch: stop first antidepressant

and start new antidepressant

  • Taper and switch immediately:

gradually taper the first antidepressant and start the new antidepressant immediately after discontinuation

  • Taper and switch after a washout:

gradually withdraw the first antidepressant then start the new antidepressant after a wash out period

  • Cross-tapering: taper or maintain the

first antidepressant while beginning the new antidepressant

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SLIDE 44

Conclusions

  • Treatment should be multimodal
  • Consider augmentation EARLY
  • Changing antidepressants and/or adding other treatment

strategies leads to treatment response in 50–60% of patients with treatment-refractory depression

  • In patients who fail to respond to an SSRI, a second SSRI

trial is warranted rather than a switch to an SNRI

  • Medication dose (and exposure) is important in improving
  • utcomes!
  • Caution with venlafaxine, particularly those with suicidal

ideation at the beginning of treatment

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SLIDE 45

Posttest Question

Following unsuccessful treatment with paroxetine and fluoxetine, a 15-year-old girl, who meets DSM-5 criteria for major depressive disorder, is prescribed extended-release venlafaxine which is initiated at 37.5 mg daily and titrated to 150 mg daily for 8 weeks. She has had minimal improvement in depressive

  • symptoms. Which of the following represents a significant clinical

consideration? 1. Venlafaxine treatment may increase her likelihood of treatment-emergent suicidality 2. Addition of cognitive-behavioral therapy is unlikely to confer any significant benefit 3. Her likelihood of clinical improvement is directly related to her serum venlafaxine concentration 4. Addition of trazodone to manage her initial insomnia may increase her likelihood of remission

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SLIDE 46

A 13-year-old boy meets DSM-5 criteria for major depressive disorder and has been treated with paroxetine 40 mg daily for 8

  • weeks. He has had minimal improvement in depressive
  • symptoms. Which of the following represents an evidence-based

treatment option? 1. Continue for an additional 4 weeks at the current dose. 2. Discontinue paroxetine and begin duloxetine 30 mg qAM 3. Discontinue paroxetine and begin citalopram 10 mg qAM 4. Augment with buspirone 10 mg BID

Posttest Question

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SLIDE 47

Higher blood levels of which of the following medications have been associated with a greater likelihood of improving in adolescents with treatment-resistant depression? 1. Venlafaxine 2. Citalopram 3. Fluvoxamine 4. Duloxetine

Posttest Question