Abstract
Introduction: Idiopathic interstitial pneumonias (IIP) are diffuse lung diseases whose cause is unknown and often present with features of autoimmunity despite not meeting criteria for a connective tissue disease (CTD). Recent studies suggest that anti-RNA binding protein (anti-RBP) antibodies, which include anti-SSA, anti-SSB, anti-Sm, and anti-RNP, play a role in the loss of immune tolerance and severity of pulmonary hypertension (PH) in CTDs. We hypothesized that anti-RBP positive (RBP+) subjects would have worse measures of lung function, radiographic findings, PH, and survival than anti-RBP negative (RBP-) subjects. Methods: Subjects with both IIP and serologies for review were identified retrospectively and stratified based on anti-RBP antibody seropositivity. Baseline cohort characteristics, pulmonary function tests (PFT), ambulatory oxygen requirement, radiographic characteristics, markers of PH, and transplant-free survival were compared between anti-RBP positive and negative groups. Results: Five hundred twenty patients with IIP were identified, of which ten percent (n = 53) were anti-RBP positive. RBP+ as compared to RBP- subjects had significantly worse PFTs as indicated by FEV1 (59.6 vs. 64.9, p = 0.046) and FVC (71.6 vs. 78.8, p = 0.018). There was a higher prevalence of radiographic honeycombing (49.1% vs. 38.3%, p = 0.006) and emphysema (22.6% vs. 5.1%, p < 0.001) in the RBP+ group despite no difference in smoking history. The Pulmonary Artery-Aorta ratio was also larger in the RBP+ group (0.93 vs. 0.88, p = 0.040). There was no difference in transplant-free survival between groups (log rank = 0.912). Conclusion: Anti-RBP+ IIP patients may have worse lung function, increased chest radiographic abnormalities, and PH compared with those without these antibodies.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 23-27 |
| Number of pages | 5 |
| Journal | Respiratory Medicine |
| Volume | 146 |
| DOIs | |
| State | Published - Jan 1 2019 |
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Keywords
- Anti-RNA binding protein antibodies
- Idiopathic interstitial pneumonia
- Interstitial lung disease
ASJC Scopus subject areas
- Pulmonary and Respiratory Medicine
Cite this
Anti-RNA binding protein positivity in idiopathic interstitial pneumonia. / Bermea, Rene S.; Adegunsoye, Ayodeji; Oldham, Justin; Ventura, Iazsmin; Lee, Cathryn; Chung, Jonathan H.; Montner, Steven; Noth, Imre; Strek, Mary E.; Vij, Rekha.
In: Respiratory Medicine, Vol. 146, 01.01.2019, p. 23-27.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Anti-RNA binding protein positivity in idiopathic interstitial pneumonia
AU - Bermea, Rene S.
AU - Adegunsoye, Ayodeji
AU - Oldham, Justin
AU - Ventura, Iazsmin
AU - Lee, Cathryn
AU - Chung, Jonathan H.
AU - Montner, Steven
AU - Noth, Imre
AU - Strek, Mary E.
AU - Vij, Rekha
PY - 2019/1/1
Y1 - 2019/1/1
N2 - Introduction: Idiopathic interstitial pneumonias (IIP) are diffuse lung diseases whose cause is unknown and often present with features of autoimmunity despite not meeting criteria for a connective tissue disease (CTD). Recent studies suggest that anti-RNA binding protein (anti-RBP) antibodies, which include anti-SSA, anti-SSB, anti-Sm, and anti-RNP, play a role in the loss of immune tolerance and severity of pulmonary hypertension (PH) in CTDs. We hypothesized that anti-RBP positive (RBP+) subjects would have worse measures of lung function, radiographic findings, PH, and survival than anti-RBP negative (RBP-) subjects. Methods: Subjects with both IIP and serologies for review were identified retrospectively and stratified based on anti-RBP antibody seropositivity. Baseline cohort characteristics, pulmonary function tests (PFT), ambulatory oxygen requirement, radiographic characteristics, markers of PH, and transplant-free survival were compared between anti-RBP positive and negative groups. Results: Five hundred twenty patients with IIP were identified, of which ten percent (n = 53) were anti-RBP positive. RBP+ as compared to RBP- subjects had significantly worse PFTs as indicated by FEV1 (59.6 vs. 64.9, p = 0.046) and FVC (71.6 vs. 78.8, p = 0.018). There was a higher prevalence of radiographic honeycombing (49.1% vs. 38.3%, p = 0.006) and emphysema (22.6% vs. 5.1%, p < 0.001) in the RBP+ group despite no difference in smoking history. The Pulmonary Artery-Aorta ratio was also larger in the RBP+ group (0.93 vs. 0.88, p = 0.040). There was no difference in transplant-free survival between groups (log rank = 0.912). Conclusion: Anti-RBP+ IIP patients may have worse lung function, increased chest radiographic abnormalities, and PH compared with those without these antibodies.
AB - Introduction: Idiopathic interstitial pneumonias (IIP) are diffuse lung diseases whose cause is unknown and often present with features of autoimmunity despite not meeting criteria for a connective tissue disease (CTD). Recent studies suggest that anti-RNA binding protein (anti-RBP) antibodies, which include anti-SSA, anti-SSB, anti-Sm, and anti-RNP, play a role in the loss of immune tolerance and severity of pulmonary hypertension (PH) in CTDs. We hypothesized that anti-RBP positive (RBP+) subjects would have worse measures of lung function, radiographic findings, PH, and survival than anti-RBP negative (RBP-) subjects. Methods: Subjects with both IIP and serologies for review were identified retrospectively and stratified based on anti-RBP antibody seropositivity. Baseline cohort characteristics, pulmonary function tests (PFT), ambulatory oxygen requirement, radiographic characteristics, markers of PH, and transplant-free survival were compared between anti-RBP positive and negative groups. Results: Five hundred twenty patients with IIP were identified, of which ten percent (n = 53) were anti-RBP positive. RBP+ as compared to RBP- subjects had significantly worse PFTs as indicated by FEV1 (59.6 vs. 64.9, p = 0.046) and FVC (71.6 vs. 78.8, p = 0.018). There was a higher prevalence of radiographic honeycombing (49.1% vs. 38.3%, p = 0.006) and emphysema (22.6% vs. 5.1%, p < 0.001) in the RBP+ group despite no difference in smoking history. The Pulmonary Artery-Aorta ratio was also larger in the RBP+ group (0.93 vs. 0.88, p = 0.040). There was no difference in transplant-free survival between groups (log rank = 0.912). Conclusion: Anti-RBP+ IIP patients may have worse lung function, increased chest radiographic abnormalities, and PH compared with those without these antibodies.
KW - Anti-RNA binding protein antibodies
KW - Idiopathic interstitial pneumonia
KW - Interstitial lung disease
UR - http://www.scopus.com/inward/record.url?scp=85057249636&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057249636&partnerID=8YFLogxK
U2 - 10.1016/j.rmed.2018.11.015
DO - 10.1016/j.rmed.2018.11.015
M3 - Article
C2 - 30665514
AN - SCOPUS:85057249636
VL - 146
SP - 23
EP - 27
JO - Respiratory Medicine
JF - Respiratory Medicine
SN - 0954-6111
ER -