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LIVERPOOL, ENGLAND – Individuals with axial spondyloarthritis (axSpA) who have comorbid fibromyalgia do respond to biologic therapy but at a seemingly lower rate if they have a high symptom score during early assessments.
Data from the British Society for Rheumatology Biologics Register in Ankylosing Spondylitis (BSRBR-AS) showed that participants with axSpA who were starting biologic therapy with a tumor necrosis factor inhibitor (TNFi) for the first time also had worse disease activity at baseline if they met fibromyalgia research criteria than if they did not.
“The issue of fibromyalgia as a comorbidity in axial SpA has been the subject of current considerable interest,” said Dr. Macfarlane, who is Clinical Chair in Epidemiology at the University of Aberdeen (Scotland), where the BSRBR-AS is run. This is for several reasons: “One is the challenge of identifying patients with axial SpA who have comorbid fibromyalgia.
“The second is the concern that comorbid fibromyalgia may have an effect on disease indices such as BASDAI [Bath Ankylosing Spondylitis Disease Activity Index],” Dr. Macfarlane observed.
This leads to the third issue: “Are patients with comorbid fibromyalgia inappropriately receiving biological therapy, and how do they respond if they do receive it?”
Previous data from the BSRBR-AS have shown that approximately one in five patients with axSpA meet research criteria for fibromyalgia (Arthritis Rheumatol. 2017;69:2144-50) and that the prevalence of the comorbidity was higher in those who met Assessment of SpondyloArthritis International Society imaging criteria and lower in those who only met clinical criteria (25% vs. 10%).
The current aims of the study presented by Dr. Macfarlane were to first quantify the extent to which meeting fibromyalgia criteria was associated with higher measures of disease activity and impact, and then to see if meeting these criteria was associated with a poorer response to first use of a TNFi.
In order to find out, Dr. Macfarlane and his associates examined data from the prospective BSRBR-AS, which has been running since 2012. The BSRBR-AS recruits patients with ASAS-confirmed axSpA who are newly starting biologics from 83 U.K. centers.
At recruitment and at 3 months, patients starting biologic treatment undergo several assessments, which since 2015 has included research criteria for fibromyalgia (J Rheumatol. 2011;38:1113–22). The latter incorporate a Widespread Pain Index rated 0-19 and a Symptom Severity Scale rated 0-12 and cover items such as fatigue and waking up unrefreshed, and the presence of lower abdominal pain or headaches.
To date, around 1,750 participants in the BSRBR-AS have completed the fibromyalgia criteria, Dr. Macfarlane said.
Across the board, baseline measures of disease activity were lower in patients who met the fibromyalgia criteria versus those who did not. This included the BASDAI and the Bath Ankylosing Spondylitis Functional Index, where scores were approximately 6.5 and 4.5 for each measure.
“Quality of life was significantly lower in those who were fibromyalgia positive,” Dr. Macfarlane said. Indeed, whatever the measure used, from the disease-specific Ankylosing Spondylitis Quality of Life (ASQoL) Scale to the general EuroQoL Quality of Life Scale, there were significant differences between those who did and did not meet fibromyalgia criteria. There were also higher scores for depression, anxiety, poorer-quality sleep, and higher levels of fatigue.
Patients treated with TNFi therapy showed improvement in both BASDAI and ASQoL scores regardless of whether they met fibromyalgia criteria, but crucially, the responses were still lower and significantly different from those without fibromyalgia.
An ASAS20 response to TNFi therapy was met by “slightly fewer” patients who met the fibromyalgia criteria than by those who did not at all follow-up points: at 3 months (about 35% vs. 45%), 6 months (about 58% vs. 61%), and 12 months (about 60% vs. 62%).
A high score on the Symptom Severity Scale but not the Widespread Pain Index of the fibromyalgia criteria was associated with a lower response to TNFi therapy at 3 months. “Such patients may benefit from the use of TNFi and nonpharmacological therapy,” Dr. Macfarlane said.
The BSRBR-AS is funded by the British Society for Rheumatology, which in turn receives funding from AbbVie, Pfizer, and UCB. Dr. Macfarlane did not provide any disclosures but has previously acknowledged receiving an honorarium from Pfizer and research funding from AbbVie and Pfizer for the Scotland Registry for Ankylosing Spondylitis study.
SOURCE: Macfarlane GJ et al. Rheumatology. 2018;57(Suppl. 3):key075.183.
LIVERPOOL, ENGLAND – Individuals with axial spondyloarthritis (axSpA) who have comorbid fibromyalgia do respond to biologic therapy but at a seemingly lower rate if they have a high symptom score during early assessments.
Data from the British Society for Rheumatology Biologics Register in Ankylosing Spondylitis (BSRBR-AS) showed that participants with axSpA who were starting biologic therapy with a tumor necrosis factor inhibitor (TNFi) for the first time also had worse disease activity at baseline if they met fibromyalgia research criteria than if they did not.
“The issue of fibromyalgia as a comorbidity in axial SpA has been the subject of current considerable interest,” said Dr. Macfarlane, who is Clinical Chair in Epidemiology at the University of Aberdeen (Scotland), where the BSRBR-AS is run. This is for several reasons: “One is the challenge of identifying patients with axial SpA who have comorbid fibromyalgia.
“The second is the concern that comorbid fibromyalgia may have an effect on disease indices such as BASDAI [Bath Ankylosing Spondylitis Disease Activity Index],” Dr. Macfarlane observed.
This leads to the third issue: “Are patients with comorbid fibromyalgia inappropriately receiving biological therapy, and how do they respond if they do receive it?”
Previous data from the BSRBR-AS have shown that approximately one in five patients with axSpA meet research criteria for fibromyalgia (Arthritis Rheumatol. 2017;69:2144-50) and that the prevalence of the comorbidity was higher in those who met Assessment of SpondyloArthritis International Society imaging criteria and lower in those who only met clinical criteria (25% vs. 10%).
The current aims of the study presented by Dr. Macfarlane were to first quantify the extent to which meeting fibromyalgia criteria was associated with higher measures of disease activity and impact, and then to see if meeting these criteria was associated with a poorer response to first use of a TNFi.
In order to find out, Dr. Macfarlane and his associates examined data from the prospective BSRBR-AS, which has been running since 2012. The BSRBR-AS recruits patients with ASAS-confirmed axSpA who are newly starting biologics from 83 U.K. centers.
At recruitment and at 3 months, patients starting biologic treatment undergo several assessments, which since 2015 has included research criteria for fibromyalgia (J Rheumatol. 2011;38:1113–22). The latter incorporate a Widespread Pain Index rated 0-19 and a Symptom Severity Scale rated 0-12 and cover items such as fatigue and waking up unrefreshed, and the presence of lower abdominal pain or headaches.
To date, around 1,750 participants in the BSRBR-AS have completed the fibromyalgia criteria, Dr. Macfarlane said.
Across the board, baseline measures of disease activity were lower in patients who met the fibromyalgia criteria versus those who did not. This included the BASDAI and the Bath Ankylosing Spondylitis Functional Index, where scores were approximately 6.5 and 4.5 for each measure.
“Quality of life was significantly lower in those who were fibromyalgia positive,” Dr. Macfarlane said. Indeed, whatever the measure used, from the disease-specific Ankylosing Spondylitis Quality of Life (ASQoL) Scale to the general EuroQoL Quality of Life Scale, there were significant differences between those who did and did not meet fibromyalgia criteria. There were also higher scores for depression, anxiety, poorer-quality sleep, and higher levels of fatigue.
Patients treated with TNFi therapy showed improvement in both BASDAI and ASQoL scores regardless of whether they met fibromyalgia criteria, but crucially, the responses were still lower and significantly different from those without fibromyalgia.
An ASAS20 response to TNFi therapy was met by “slightly fewer” patients who met the fibromyalgia criteria than by those who did not at all follow-up points: at 3 months (about 35% vs. 45%), 6 months (about 58% vs. 61%), and 12 months (about 60% vs. 62%).
A high score on the Symptom Severity Scale but not the Widespread Pain Index of the fibromyalgia criteria was associated with a lower response to TNFi therapy at 3 months. “Such patients may benefit from the use of TNFi and nonpharmacological therapy,” Dr. Macfarlane said.
The BSRBR-AS is funded by the British Society for Rheumatology, which in turn receives funding from AbbVie, Pfizer, and UCB. Dr. Macfarlane did not provide any disclosures but has previously acknowledged receiving an honorarium from Pfizer and research funding from AbbVie and Pfizer for the Scotland Registry for Ankylosing Spondylitis study.
SOURCE: Macfarlane GJ et al. Rheumatology. 2018;57(Suppl. 3):key075.183.
LIVERPOOL, ENGLAND – Individuals with axial spondyloarthritis (axSpA) who have comorbid fibromyalgia do respond to biologic therapy but at a seemingly lower rate if they have a high symptom score during early assessments.
Data from the British Society for Rheumatology Biologics Register in Ankylosing Spondylitis (BSRBR-AS) showed that participants with axSpA who were starting biologic therapy with a tumor necrosis factor inhibitor (TNFi) for the first time also had worse disease activity at baseline if they met fibromyalgia research criteria than if they did not.
“The issue of fibromyalgia as a comorbidity in axial SpA has been the subject of current considerable interest,” said Dr. Macfarlane, who is Clinical Chair in Epidemiology at the University of Aberdeen (Scotland), where the BSRBR-AS is run. This is for several reasons: “One is the challenge of identifying patients with axial SpA who have comorbid fibromyalgia.
“The second is the concern that comorbid fibromyalgia may have an effect on disease indices such as BASDAI [Bath Ankylosing Spondylitis Disease Activity Index],” Dr. Macfarlane observed.
This leads to the third issue: “Are patients with comorbid fibromyalgia inappropriately receiving biological therapy, and how do they respond if they do receive it?”
Previous data from the BSRBR-AS have shown that approximately one in five patients with axSpA meet research criteria for fibromyalgia (Arthritis Rheumatol. 2017;69:2144-50) and that the prevalence of the comorbidity was higher in those who met Assessment of SpondyloArthritis International Society imaging criteria and lower in those who only met clinical criteria (25% vs. 10%).
The current aims of the study presented by Dr. Macfarlane were to first quantify the extent to which meeting fibromyalgia criteria was associated with higher measures of disease activity and impact, and then to see if meeting these criteria was associated with a poorer response to first use of a TNFi.
In order to find out, Dr. Macfarlane and his associates examined data from the prospective BSRBR-AS, which has been running since 2012. The BSRBR-AS recruits patients with ASAS-confirmed axSpA who are newly starting biologics from 83 U.K. centers.
At recruitment and at 3 months, patients starting biologic treatment undergo several assessments, which since 2015 has included research criteria for fibromyalgia (J Rheumatol. 2011;38:1113–22). The latter incorporate a Widespread Pain Index rated 0-19 and a Symptom Severity Scale rated 0-12 and cover items such as fatigue and waking up unrefreshed, and the presence of lower abdominal pain or headaches.
To date, around 1,750 participants in the BSRBR-AS have completed the fibromyalgia criteria, Dr. Macfarlane said.
Across the board, baseline measures of disease activity were lower in patients who met the fibromyalgia criteria versus those who did not. This included the BASDAI and the Bath Ankylosing Spondylitis Functional Index, where scores were approximately 6.5 and 4.5 for each measure.
“Quality of life was significantly lower in those who were fibromyalgia positive,” Dr. Macfarlane said. Indeed, whatever the measure used, from the disease-specific Ankylosing Spondylitis Quality of Life (ASQoL) Scale to the general EuroQoL Quality of Life Scale, there were significant differences between those who did and did not meet fibromyalgia criteria. There were also higher scores for depression, anxiety, poorer-quality sleep, and higher levels of fatigue.
Patients treated with TNFi therapy showed improvement in both BASDAI and ASQoL scores regardless of whether they met fibromyalgia criteria, but crucially, the responses were still lower and significantly different from those without fibromyalgia.
An ASAS20 response to TNFi therapy was met by “slightly fewer” patients who met the fibromyalgia criteria than by those who did not at all follow-up points: at 3 months (about 35% vs. 45%), 6 months (about 58% vs. 61%), and 12 months (about 60% vs. 62%).
A high score on the Symptom Severity Scale but not the Widespread Pain Index of the fibromyalgia criteria was associated with a lower response to TNFi therapy at 3 months. “Such patients may benefit from the use of TNFi and nonpharmacological therapy,” Dr. Macfarlane said.
The BSRBR-AS is funded by the British Society for Rheumatology, which in turn receives funding from AbbVie, Pfizer, and UCB. Dr. Macfarlane did not provide any disclosures but has previously acknowledged receiving an honorarium from Pfizer and research funding from AbbVie and Pfizer for the Scotland Registry for Ankylosing Spondylitis study.
SOURCE: Macfarlane GJ et al. Rheumatology. 2018;57(Suppl. 3):key075.183.
REPORTING FROM RHEUMATOLOGY 2018
Key clinical point: Comorbid axial spondyloarthritis and fibromyalgia are associated with a lower response to biologic therapy.
Major finding: About 35% vs. 45% of patients who did and did not meet research criteria for fibromyalgia had an ASAS20 response at 3 months.
Study details: Data on 1,750 participants of the British Society for Rheumatology Biologics Register in Ankylosing Spondylitis (BSRBR-AS).
Disclosures: The BSRBR-AS is funded by the British Society for Rheumatology, which in turn receives funding from AbbVie, Pfizer, and UCB. Dr. Macfarlane did not provide any disclosures but has previously acknowledged receiving an honorarium from Pfizer and research funding from AbbVie and Pfizer for the Scotland Registry for Ankylosing Spondylitis study.
Source: Macfarlane GJ et al. Rheumatology. 2018;57(Suppl. 3):key075.183.