Question: List all reported treatment options for anxiety in autism spectrum disorder.

Context:
A parent report of comorbid diagnosis of attention-deficit/hyperactivity disorder, bipolar disorder, obsessive-compulsive disorder, depression, or anxiety was associated with a high rate of use, with 80% receiving ≥ 1 psychotropic medication
Mindfulness-based therapy (MBT) has been found effective in reducing anxiety and depression symptoms, however research in autism is limited.
Therefore, we examined the effects of a modified MBT protocol (MBT-AS) in high-functioning adults with ASD.
the present study is the first controlled trial to demonstrate that adults with ASD can benefit from MBT-AS.
This pilot, randomized controlled trial evaluated the feasibility and preliminary outcomes of the Multimodal Anxiety and Social Skills Intervention (MASSI) program in a sample of 30 adolescents with ASD and anxiety symptoms of moderate or greater severity.
These findings suggest MASSI is a feasible treatment program and further evaluation is warranted.
The purpose of this pilot study was to evaluate whether a modified version of the Coping Cat program could be effective in reducing anxiety in children with autism spectrum disorder (ASD).
the Coping Cat program (cognitive-behavioral therapy; CBT)
Results provide preliminary evidence that a modified version of the Coping Cat program may be a feasible and effective program for reducing clinically significant levels of anxiety in children with high-functioning ASD.
The intent of this article is to explore the efficacy of both the literal and concrete externalization aspects within narrative therapy, and the implementation of interactive metaphors as a combined psychotherapeutic approach for decreasing anxiety with people who present with high-functioning autism.
This paper reports a case series of children and adolescents with ASD and an anxiety disorder who were treated with a standard cognitive behaviour therapy (CBT) rationale adapted to take account of the neuropsychological features of ASD.
children with moderate autistic symptomology (per SRS-P) were significantly more likely to improve from family CBT (FCBT) than individual CBT (ICBT; OR = 8.67)
Though both treatments reduced anxiety, FCBT outperformed ICBT for children with moderate ASD symptoms, a benefit potentially linked to more at-home exposures and greater child involvement in FCBT.
A structural model-building approach was used to test the extent to which family and peer variables directly or indirectly affected ASD via child anxiety/depression.
The key findings were that anxiety/depression and ASD symptomatology were significantly related, and family conflict was more predictive of ASD symptomatology than positive family/peer influences. The results point to the utility of expanding interventions to include conflict management for couples, even when conflict and family distress is low.
A family-based, cognitive behavioural treatment for anxiety in 47 children with comorbid anxiety disorders and High Functioning Autism Spectrum Disorder (HFA) was evaluated.
Following treatment, 71.4% of the treated participants no longer fulfilled diagnostic criteria for an anxiety disorder. Comparisons between the two conditions indicated significant reductions in anxiety symptoms as measured by self-report, parent report and teacher report

Answer: The predominant approach is to use versions of cognitive behavioural therapies, such as:
Mindfulness Based Therapy (MBT)
Multimodal Anxiety and Social Skills Intervention (MASSI) program
modified version of the Coping Cat program, (cognitive-behavioral therapy; CBT)
Family cognitive-behavioral therapy has been found to be more effective than Individual cognitive-behavioral therapy 
Conflict management for couples, even when conflict and family distress is low

Drugtherapy: 
Sertraline
Exact answer: Mindfulness Based Therapy (MBT)
Multimodal Anxiety and Social Skills Intervention (MASSI) program
modified version of the Coping Cat program
(cognitive-behavioral therapy; CBT
Family cognitive-behavioral therapy
Individual cognitive-behavioral therapy
Conflict management for couples
even when conflict and family distress is low
Sertraline